title: Overview

text: [Redis Software version 7.8.2](https://redis.io/downloads/#software) is now available!

title: Highlights

title: New in this release

title: New features

text:
- Redis Community Edition and Redis Stack 7.4 features are now available when you [create]() or [upgrade]() a database with database version 7.4, including:

    - [Hash field expiration]()

    - New vector data types to reduce memory usage

    - Time series insertion filters

    - See the [Redis 7.4 release blog post](https://redis.io/blog/announcing-redis-community-edition-and-redis-stack-74/) and [Redis Community Edition 7.4 release notes]() for details.

- Client-side caching support:

    - Client-side caching allows Redis clients to store a subset of data in a local cache and avoid sending repeated read requests to the Redis database.

    - When used to cache frequently accessed data, this technique can improve performance by decreasing network traffic, latency, and load on the database.

    - Supported for Redis databases with Redis versions 7.4 and later.

    - For more information, see the [client-side caching introduction]() and [client-side caching compatibility with Redis Software]().

- Database availability API:

    - Verifies whether a Redis Software database is available to perform read and write operations and can respond to queries from client applications.

    - Load balancers and automated monitoring tools can use this API to monitor database availability.

    - See [Check database availability]() and the [REST API reference]() for details.

- Metrics stream engine preview:

    - The new metrics stream engine's exporter-based infrastructure provides access to more accurate, real-time data. This enhanced, scalable monitoring system allows you to set up more effective alerts and respond to issues faster.

    - Exposes a new `/v2` Prometheus scraping endpoint that you can use to export metrics to external monitoring tools such as Grafana, DataDog, NewRelic, and Dynatrace.

    - Exports raw data instead of aggregated data to improve monitoring at scale and accuracy compared to v1 Prometheus metrics.

    - For an initial list of metrics exported by the new metrics stream engine, see [Prometheus metrics v2](). While the metrics stream engine is in preview, this document provides only a partial list. More metrics will be added.

    - V1 Prometheus metrics are deprecated but still available. To transition to the new metrics stream engine, either migrate your existing dashboards using [Prometheus v1 metrics and equivalent v2 PromQL]() now, or wait to use new preconfigured dashboards when they become available in a future release.

    - The new metrics stream engine resolved some known issues and bugs:

        - RS31923: Added missing types to Prometheus metrics.

        - RS80626: Added DMC thread utilization metrics to the metrics exporter.

        - RS113028: Upgraded the node exporter dependency to version 1.7.0.

        - RS103537: Fixed an issue with missing indications when a node went down. You can see the node's metrics up until it went down and can monitor `node_metrics_up` to get an indication that it is down.

        - RS103251: Metrics are now available during state machine operations.

        - RS74732: Fixed an issue where a replica CRDB's stats were missing after removing and then re-adding the replica CRDB instance.

        - RS65948: Fixed an issue where the metrics exporter generated duplicate stats headers when the cluster had both regular databases and Active-Active databases.

- [Rebalance shard placement REST API request](), which distributes the database's shards across nodes based on the database's shard placement policy. See [Shard placement policy]() for more information about shard placement and available policies.

- [Shard failover REST API requests](), which perform failover on specified primary shards and promotes their replicas to primary shards.

- REST API requests to [stop traffic]() or [resume traffic]() to a database.

title: Enhancements

text:
- New Cluster Manager UI enhancements:

    - Perform node actions from the **Nodes** screen to [verify nodes](), [set a node as primary or secondary](), [remove nodes](), and manage node alert settings.

    - Categorize databases with [custom tags](). When you add new tags to a database, the keys and values already used by existing tags will appear as suggestions.

    - Moved several settings on the database configuration screen:

        - The eviction setting now appears in the [**Capacity**]() section.

        - [**High availability**]() and [**Durability**]() have separate sections.

    - Improved error messages on the sign-in screen for locked out users versus incorrect or expired passwords.

    - Flush an Active-Active database.

- A new **User Manager** role designed for user administration is available for [role-based access control]().

    - This management role allows assigned users to create, edit, and delete users using the Cluster Manager UI and REST API.

    - For more details about the privileges granted by the **User Manager** role, see [Cluster Manager UI permissions]() and [REST API permissions]().

- When you upgrade a database, the upgrade process also attempts to upgrade database modules by default.

    - [`rladmin upgrade db`]() will always upgrade the database's modules.

    - If you [upgrade a database]() using the REST API, you can set `"latest_with_modules": false` in the request body to prevent module upgrades.

- Added support for [log rotation]() based on both size and time.

- [Minimum password length](), previously hardcoded as 8 characters, is now configurable in the Cluster Manager UI and the REST API.

- The [cluster license expiration alert threshold](), which determines how far in advance you want to be notified of the license expiration, is configurable in the Cluster Manager UI and the REST API.

- The Cluster Manager UI's time zone can be configured with an [update CM settings REST API request]().

- Timeouts for raising connection alarms can be configured with an [update database configuration REST API request]():

    - `crdt_sync_connection_alarm_timeout_seconds`: if the syncer takes longer than the specified number of seconds to connect to an Active-Active database, raise a connection alarm.

    - `replica_sync_connection_alarm_timeout_seconds`: if the syncer takes longer than the specified number of seconds to connect to a replica, raise a connection alarm.

- Reserved the following ports:

    | Port | Process name | Usage |
    |------|--------------|-------|
    | 3347 | cert_exporter | Reports cluster certificate metrics |
    | 3348 | process_exporter | Reports process metrics for DMC and Redis processes |
    | 3349 | cluster_wd_exporter | Reports cluster watchdog metrics |
    | 3350 | db_controller | Internode communication |
    | 9091 | node_exporter | Reports host node metrics related to CPU, memory, disk, and more |
    | 9125 | statsd_exporter | Reports push metrics related to the DMC and syncer, and some cluster and node metrics |

title: Redis database versions

text:
Redis Software version 7.8.2 includes three Redis database versions: 7.4.0, 7.2.4, and 6.2.13.

The [default Redis database version]() is 7.4.

title: Redis module feature sets

text:
Redis Software comes packaged with several modules. As of version 7.8.2, Redis Software includes three feature sets, compatible with different Redis database versions.

The following table shows which Redis modules are compatible with each Redis database version included in this release.

| Redis database version | Compatible Redis modules |
|------------------------|--------------------------|
| 7.4 | [RediSearch 2.10]()
[RedisJSON 2.8]()
[RedisTimeSeries 1.12]()
[RedisBloom 2.8]() |
| 7.2 | [RediSearch 2.8]()
[RedisJSON 2.6]()
[RedisTimeSeries 1.10]()
[RedisBloom 2.6]() |
| 6.2 | [RediSearch 2.6]()
[RedisJSON 2.4]()
[RedisTimeSeries 1.8]()
[RedisBloom 2.4]()
[RedisGraph v2.10]()[1](#module-note-1)  |

1. RedisGraph end-of-life has been announced and will be removed in a future release. See the [RedisGraph end-of-life announcement](https://redis.io/blog/redisgraph-eol/) for more details.

title: Resolved issues

text:
- RS123645: Fixed inconsistent behavior for shard creation when you enable sharding. Now, when creating a database with sharding enabled, you must always provide a `shard_key_regex`.

- RS130444: Fixed an issue that prevented creating or editing users without an email address in the Cluster Manager UI.

- RS121796: The "multiple endpoint" configuration database default setting should also enable sharding when selected.

- RS128768: Fixed an issue that prevented metric graph timestamp details from displaying in the Cluster Manager UI.

- RS127120: Fixed an issue where `crdt_replicas` were not properly updated when flushing an Active-Active database.

- RS127054: Fixed an issue where the install script incorrectly reported "Port 53 is occupied" instead of the correct value of the occupied port.

- RS125934: Fixed validation that prevented updating the Active-Active database configuration if existing TLS certificates expired.

- RS125412: Fixed an issue where deleted external IP addresses were still listed as available during node configuration when joining a cluster.

- RS122012: Fixed an issue that sent a cutoff email message for long-running alerts.

- RS121726: Block the `remove_shards` option for `rlutil`. You can use Replica Of to decrease the shard count instead.

- RS121076: Added a 5-minute connection timeout when promoting a replica shard to a primary role.

- RS118103: Removed the inaccurate shard `BACKUP_PROGRESS` column from the `rladmin status` command's output.

- RS116990: Fixed an issue with flash-enabled databases where `FLUSHDB` could cause shard crashes in versions 7.0 and 7.2, and cause clients to stop responding in earlier versions.

- RS114923: Fixed an issue where the legacy RDB parser could generate an `XGROUP CREATE` command with an incorrect `ENTRIESREAD` value when syncing a source RDB to a database with Redis version 7.0 or later.

- RS114258: Fixed an issue where an Active-Active database instance could lose keys during partial syncing if the destination shard was stale.

- RS133653: Fixed a validation issue where expired client certificates prevented updates to database configuration unrelated to TLS.

- RS126235: Fixed an issue where database updates could time out and enter a change pending state due to outdated shard data.

- RS125128: Improved real-time logging for installation and upgrade for better visibility.

- RS119958: Removed the log file limit that caused the debuginfo script to fail with the error "/bin/tar: Argument list too long" in Auto Tiering clusters and improved RocksDB log file rotation.

- RS137396: Providing an email address is no longer mandatory when creating new ACL users in the Cluster Manager UI.

- RS134238: Improved database sorting performance in the Cluster Manager UI.

- RS129418: Improved log rotation mechanism for Auto Tiering clusters to reduce excessive logs.

- RS137231: Fixed an issue where database shards could become stuck during migration due to outdated node data.

title: Version changes

title: Breaking changes

text:
Redis Software version 7.8.2 introduces the following breaking changes:

- When you upgrade a database, the upgrade process also attempts to upgrade database modules by default.

    - The default value of `latest_with_modules` has changed to `true`.

    - [`rladmin upgrade db`]() will always upgrade the database's modules.

    - When you [upgrade a database]() using the REST API, you can set `"latest_with_modules": false` in the request body to prevent module upgrades.

- Authentication method changes for [`/v1/users/password`]() REST API requests.

    - `PUT`, `POST`, and `DELETE` methods require users to include their usernames and a current password in the authentication header to change their password lists. If the authentication header is not provided, the response status will be `401 Unauthorized`.

    - `/v1/users/password` requests change the password list of the user who provides their credentials in the authorization header when sending the requests.

    - `PUT` and `POST` requests will ignore `username` and `old_password` parameters provided in the request body.

    - `DELETE` requests will ignore the `username` parameter provided in the request body.

- Authentication method changes for [`POST /v1/users/authorize`]() REST API requests.

    - The `POST` method requires users to include their usernames and a current password in the authentication header to generate a JSON Web Token.

    - `POST /v1/users/authorize` generates a token for the user who provides their credentials in the authorization header when sending the requests.

    - `POST` requests will ignore `username` and `password` parameters provided in the request body.

title: Redis database version 7.4 breaking changes {#redis-74-breaking-changes}

text:
When new major versions of Redis Community Edition change existing commands, upgrading your database to a new version can potentially break some functionality. Before you upgrade, read the provided list of breaking changes that affect Redis Software and update any applications that connect to your database to handle these changes.

Confirm your Redis database version (`redis_version`) using the Cluster Manager UI or run the following [`INFO`]() command with [`redis-cli`]():

[code example]

#### Security behavior changes

- [#13108](https://github.com/redis/redis/pull/13108) Lua: LRU eviction for scripts generated with `EVAL`.

#### Other general behavior changes

- [#13133](https://github.com/redis/redis/pull/13133) Lua: allocate VM code with jemalloc instead of libc and count it as used memory.

- [#12171](https://github.com/redis/redis/pull/12171) `ACL LOAD`: do not disconnect all clients.

title: Product lifecycle updates

title: Deprecations

text:
#### API deprecations

- Deprecated `background_op` field from BDB REST API object. Use [`GET /v1/actions/bdb/<bdb_uid>`]() instead.

- Deprecated the following fields for [upgrade database]() REST API requests:

    - `keep_redis_version`; use `redis_version` instead

    - `current_module`; use `new_module_args` instead

    - `new_module`; use `new_module_args` instead

- Deprecated the following `module_list` fields for [create database]() REST API requests:

    - `module_id`; use `module_name` instead

    - `semantic_version`; use module_args instead

- `min_redis_version` is only relevant to Redis database versions earlier than 7.4 and is replaced with `compatible_redis_version` in [module REST API]() responses.

- Deprecated the [`rladmin upgrade modules`]() command. Use [`rladmin upgrade db`]() instead.

- Deprecated `POST /v1/modules/upgrade/bdb/<uid>` REST API request. Use [`POST /v1/bdbs/<uid>/upgrade`]() to upgrade modules instead.

#### V1 Prometheus metrics deprecation

 V1 Prometheus metrics are deprecated but still available. To transition to the new metrics stream engine, either migrate your existing dashboards using [Prometheus v1 metrics and equivalent v2 PromQL]() now, or wait to use new preconfigured dashboards when they become available in a future release.

#### Download center modules deprecation

New Redis modules will not be available for download from the Redis download center.

#### Legacy UI not supported

The legacy UI was deprecated in favor of the new Cluster Manager UI in Redis Software version 7.2.4 and is no longer supported as of Redis Software version 7.8.2.

#### Redis 6.0 databases not supported

Redis database version 6.0 was deprecated in Redis Software version 7.4.2 and is no longer supported as of Redis Software version 7.8.2.

To prepare for the removal of Redis database version 6.0 before you upgrade to Redis Software version 7.8.2:

- For Redis Software 6.2.* clusters:

    1. Set the Redis upgrade policy to `latest`:

        [code example]

    1. [Upgrade Redis 6.0 databases]() to Redis 6.2. See the [Redis 6.2 release notes](https://raw.githubusercontent.com/redis/redis/6.2/00-RELEASENOTES) for the list of changes.

- For Redis Software 7.2.4 and 7.4.2 clusters, upgrade Redis 6.0 databases to Redis 7.2. Before you upgrade your databases, see the list of [Redis 7.2 breaking changes]() and update any applications that connect to your database to handle these changes.

#### Ubuntu 18.04 not supported

Ubuntu 18.04 was deprecated in Redis Software version 7.2.4 and is no longer supported as of Redis Software version 7.8.2.

title: Upcoming changes

title: Supported platforms

text:
The following table provides a snapshot of supported platforms as of this Redis Software release. See the [supported platforms reference]() for more details about operating system compatibility.

✅ Supported – The platform is supported for this version of Redis Software and Redis Stack modules.

:warning: Deprecation warning – The platform is still supported for this version of Redis Software, but support will be removed in a future release.

| Redis Software
major versions | 7.8 | 7.4 | 7.2 | 6.4 | 6.2 |
|---------------------------------|:-----:|:-----:|:-----:|:-----:|:-----:|
| **Release date** | Nov 2024 | Feb 2024 | Aug 2023 | Feb 2023 | Aug 2021 |
| [**End-of-life date**]() | Determined after
next major release | Nov 2026 | Feb 2026 | Aug 2025 | Feb 2025 |
| **Platforms** | | | | | |
| RHEL 9 &
compatible distros[1](#table-note-1) | ✅ | ✅ | – | – | – |
| RHEL 9
FIPS mode[5](#table-note-5) | ✅ | – | – | – | – |
| RHEL 8 &
compatible distros[1](#table-note-1) | ✅ | ✅ | ✅ | ✅ | ✅ |
| RHEL 7 &
compatible distros[1](#table-note-1) | – | – | :warning: | :warning: | :warning: |
| Ubuntu 20.04[2](#table-note-2) | ✅ | ✅ | ✅ | ✅ | – |
| Ubuntu 18.04[2](#table-note-2) | – | :warning: | :warning: | :warning: | :warning: |
| Ubuntu 16.04[2](#table-note-2) | – | – | :warning: | :warning: | :warning: |
| Amazon Linux 2 | ✅ | ✅ | ✅ | ✅ | – |
| Amazon Linux 1 | – | – | :warning: | :warning: | :warning: |
| Kubernetes[3](#table-note-3) | ✅ | ✅ | ✅ | ✅ | ✅ |
| Docker[4](#table-note-4) | ✅ | ✅ | ✅ | ✅ | ✅ |

1. The RHEL-compatible distributions CentOS, CentOS Stream, Alma, and Rocky are supported if they have full RHEL compatibility. Oracle Linux running the Red Hat Compatible Kernel (RHCK) is supported, but the Unbreakable Enterprise Kernel (UEK) is not supported.

2. The server version of Ubuntu is recommended for production installations. The desktop version is only recommended for development deployments.

3. See the [Redis Enterprise for Kubernetes documentation]() for details about support per version and Kubernetes distribution.

4. [Docker images]() of Redis Software are certified for development and testing only.

5. Supported only if [FIPS was enabled during RHEL installation](https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/security_hardening/switching-rhel-to-fips-mode_security-hardening#proc_installing-the-system-with-fips-mode-enabled_switching-rhel-to-fips-mode) to ensure FIPS compliance.

title: Downloads

text:
The following table shows the SHA256 checksums for the available packages:

| Package | SHA256 checksum (7.8.2-34 Nov release) |
|---------|---------------------------------------|
| Ubuntu 20 | 17500356d8338e4f8fd8a37e7b39a190d05ca66d35ae6c4aa3aa8cbc7bb99864 |
| Red Hat Enterprise Linux (RHEL) 8 | caa2ccd24749ae1fb904841df50a8b69b69c74441458649ca49b9b617e286191 |
| Red Hat Enterprise Linux (RHEL) 9 | 31f9d07beb7dfd9239083ecad99ecbfe3cdfcf96673881ebed08171d8194bff3 |
| Amazon Linux 2 | a737ca86d800caf9ca266d5771fbcffd3f973a7fb8e63e7b819681322ff6ed67 |

title: Known issues

text: - RS131972: Creating an ACL that contains a line break in the Cluster Manager UI can cause shard migration to fail due to ACL errors.

title: Known limitations

text:
#### New Cluster Manager UI limitations

The following legacy UI features are not yet available in the new Cluster Manager UI:

- Purge an Active-Active instance.

    Use [`crdb-cli crdb purge-instance`]() instead.

- Search and export the log.

#### RedisGraph prevents upgrade to RHEL 9

You cannot upgrade from a prior RHEL version to RHEL 9 if the Redis Software cluster contains a RedisGraph module, even if unused by any database. The [RedisGraph module has reached End-of-Life](https://redis.com/blog/redisgraph-eol/) and is completely unavailable in RHEL 9.

#### Query results might include hash keys with lazily expired fields

If one or more fields of a hash key expire after an `FT.SEARCH` or `FT.AGGREGATE` query begins, Redis does not account for these lazily expired fields. As a result, keys with expired fields might still be included in the query results, leading to potentially incorrect or inconsistent results.

title: Security

text:
#### Open source Redis security fixes compatibility

As part of Redis's commitment to security, Redis Software implements the latest [security fixes](https://github.com/redis/redis/releases) available with [open source Redis](https://github.com/redis/redis). Redis Software has already included the fixes for the relevant CVEs.

Some CVEs announced for open source Redis do not affect Redis Software due to different or additional functionality available in Redis Software that is not available in open source Redis.

Redis Software 7.8.2-34 supports open source Redis 7.4, 7.2, and 6.2. Below is the list of open source Redis CVEs fixed by version.

Redis 7.2.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.2.1)

Redis 7.0.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.0.13)

- (CVE-2023-36824) Extracting key names from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading random heap memory, heap corruption, and potentially remote code execution. Specifically: using `COMMAND GETKEYS*` and validation of key names in ACL rules. (Redis 7.0.12)

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 7.0.11)

- (CVE-2023-28425) Specially crafted `MSETNX` commands can lead to assertion and denial-of-service. (Redis 7.0.10)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 7.0.9)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 7.0.8)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 7.0.9)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 7.0.8)

- (CVE-2022-35951) Executing an `XAUTOCLAIM` command on a stream key in a specific state, with a specially crafted `COUNT` argument, may cause an integer overflow, a subsequent heap overflow, and potentially lead to remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.5)

- (CVE-2022-31144) A specially crafted `XAUTOCLAIM` command on a stream key in a specific state may result in heap overflow and potentially remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.4)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 7.0.12)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 7.0.0)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 7.0.0)

Redis 6.2.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 6.2.12)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 6.2.11)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 6.2.9)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 6.2.11)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 6.2.9)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 6.2.13)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 6.2.7)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 6.2.7)

- (CVE-2021-41099) Integer to heap buffer overflow handling certain string commands and network payloads, when `proto-max-bulk-len` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32762) Integer to heap buffer overflow issue in `redis-cli` and `redis-sentinel` parsing large multi-bulk replies on some older and less common platforms. (Redis 6.2.6)

- (CVE-2021-32761) An integer overflow bug in Redis version 2.2 or newer can be exploited using the `BITFIELD` command to corrupt the heap and potentially result with remote code execution. (Redis 6.2.5)

- (CVE-2021-32687) Integer to heap buffer overflow with intsets, when `set-max-intset-entries` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32675) Denial Of Service when processing RESP request payloads with a large number of elements on many connections. (Redis 6.2.6)

- (CVE-2021-32672) Random heap reading issue with Lua Debugger. (Redis 6.2.6)

- (CVE-2021-32628) Integer to heap buffer overflow handling ziplist-encoded data types, when configuring a large, non-default value for `hash-max-ziplist-entries`, `hash-max-ziplist-value`, `zset-max-ziplist-entries` or `zset-max-ziplist-value`. (Redis 6.2.6)

- (CVE-2021-32627) Integer to heap buffer overflow issue with streams, when configuring a non-default, large value for `proto-max-bulk-len` and `client-query-buffer-limit`. (Redis 6.2.6)

- (CVE-2021-32626) Specially crafted Lua scripts may result with Heap buffer overflow. (Redis 6.2.6)

- (CVE-2021-32625) An integer overflow bug in Redis version 6.0 or newer can be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. (Redis 6.2.4)

- (CVE-2021-29478) An integer overflow bug in Redis 6.2 could be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration value, creating a large set key that consists of integer values and using the COPY command to duplicate it. The integer overflow bug exists in all versions of Redis starting with 2.6, where it could result with a corrupted RDB or DUMP payload, but not exploited through COPY (which did not exist before 6.2). (Redis 6.2.3)

- (CVE-2021-29477) An integer overflow bug in Redis version 6.0 or newer could be exploited using the STRALGO LCS command to corrupt the heap and potentially result in remote code execution. The integer overflow bug exists in all versions of Redis starting with 6.0. (Redis 6.2.3)


title: Redis Software release notes 7.8.2-60 (December 2024)

page_type: content

title: Overview

role: overview

text: This is a maintenance release for [Redis Software version 7.8.2](https://redis.io/downloads/#software).

title: Highlights

role: content

text:
This version offers:

- Bug fixes, including a fix for a RHEL 8 OpenSSL dependency issue that caused frequent restarts of the `cm_server` and prevented access to the Redis Software Cluster Manager UI after upgrading to Redis Software version 7.8.2-34.

title: New in this release

title: Redis database versions

title: Redis module feature sets

title: Resolved issues

text:
- RS142899: Fixed a RHEL 8 OpenSSL dependency issue that caused frequent restarts of the `cm_server` and prevented access to the Cluster Manager UI after upgrading to Redis Software version 7.8.2-34.

- RS126364: Fixed a memory leak in the DMC proxy process.

title: Version changes

role: compatibility

title: Supported platforms

title: Downloads

text:
The following table shows the SHA256 checksums for the available packages:

| Package | SHA256 checksum (7.8.2-60 Dec release) |
|---------|---------------------------------------|
| Ubuntu 20 | c2913aaf2641273bd35ef3564b2e51b0911c3e3ef7b552735efd6372edc4425d |
| Red Hat Enterprise Linux (RHEL) 8 | 351b0bc249973d6fe93d3bb19f2dd1d2275128459e4542c052587341f883152f |
| Red Hat Enterprise Linux (RHEL) 9 | 361dad6fba36e5da3975ebf060d1ebe8bbb3839a2a22d11e98761667f497a6a2 |
| Amazon Linux 2 | bad3f9cff028a51b71c666e73fe5a2fd81ab863cce69f418d55e75a5faa24aa9 |

title: Known issues

title: Known limitations

title: Security

role: security

text:
#### Open source Redis security fixes compatibility

As part of Redis's commitment to security, Redis Software implements the latest [security fixes](https://github.com/redis/redis/releases) available with [open source Redis](https://github.com/redis/redis). Redis Software has already included the fixes for the relevant CVEs.

Some CVEs announced for open source Redis do not affect Redis Software due to different or additional functionality available in Redis Software that is not available in open source Redis.

Redis Software 7.8.2-60 supports open source Redis 7.4, 7.2, and 6.2. Below is the list of open source Redis CVEs fixed by version.

Redis 7.2.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.2.1)

Redis 7.0.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.0.13)

- (CVE-2023-36824) Extracting key names from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading random heap memory, heap corruption, and potentially remote code execution. Specifically: using `COMMAND GETKEYS*` and validation of key names in ACL rules. (Redis 7.0.12)

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 7.0.11)

- (CVE-2023-28425) Specially crafted `MSETNX` commands can lead to assertion and denial-of-service. (Redis 7.0.10)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 7.0.9)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 7.0.8)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 7.0.9)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 7.0.8)

- (CVE-2022-35951) Executing an `XAUTOCLAIM` command on a stream key in a specific state, with a specially crafted `COUNT` argument, may cause an integer overflow, a subsequent heap overflow, and potentially lead to remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.5)

- (CVE-2022-31144) A specially crafted `XAUTOCLAIM` command on a stream key in a specific state may result in heap overflow and potentially remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.4)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 7.0.12)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 7.0.0)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 7.0.0)

Redis 6.2.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 6.2.12)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 6.2.11)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 6.2.9)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 6.2.11)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 6.2.9)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 6.2.13)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 6.2.7)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 6.2.7)

- (CVE-2021-41099) Integer to heap buffer overflow handling certain string commands and network payloads, when `proto-max-bulk-len` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32762) Integer to heap buffer overflow issue in `redis-cli` and `redis-sentinel` parsing large multi-bulk replies on some older and less common platforms. (Redis 6.2.6)

- (CVE-2021-32761) An integer overflow bug in Redis version 2.2 or newer can be exploited using the `BITFIELD` command to corrupt the heap and potentially result with remote code execution. (Redis 6.2.5)

- (CVE-2021-32687) Integer to heap buffer overflow with intsets, when `set-max-intset-entries` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32675) Denial Of Service when processing RESP request payloads with a large number of elements on many connections. (Redis 6.2.6)

- (CVE-2021-32672) Random heap reading issue with Lua Debugger. (Redis 6.2.6)

- (CVE-2021-32628) Integer to heap buffer overflow handling ziplist-encoded data types, when configuring a large, non-default value for `hash-max-ziplist-entries`, `hash-max-ziplist-value`, `zset-max-ziplist-entries` or `zset-max-ziplist-value`. (Redis 6.2.6)

- (CVE-2021-32627) Integer to heap buffer overflow issue with streams, when configuring a non-default, large value for `proto-max-bulk-len` and `client-query-buffer-limit`. (Redis 6.2.6)

- (CVE-2021-32626) Specially crafted Lua scripts may result with Heap buffer overflow. (Redis 6.2.6)

- (CVE-2021-32625) An integer overflow bug in Redis version 6.0 or newer can be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. (Redis 6.2.4)

- (CVE-2021-29478) An integer overflow bug in Redis 6.2 could be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration value, creating a large set key that consists of integer values and using the COPY command to duplicate it. The integer overflow bug exists in all versions of Redis starting with 2.6, where it could result with a corrupted RDB or DUMP payload, but not exploited through COPY (which did not exist before 6.2). (Redis 6.2.3)

- (CVE-2021-29477) An integer overflow bug in Redis version 6.0 or newer could be exploited using the STRALGO LCS command to corrupt the heap and potentially result in remote code execution. The integer overflow bug exists in all versions of Redis starting with 6.0. (Redis 6.2.3)


title: Redis Software release notes 7.8.4-18 (December 2024)

summary: Certificate-based authentication for the REST API. Dry run option to validate Redis ACL REST API requests.

title: Overview

text: [Redis Software version 7.8.4](https://redis.io/downloads/#software) is now available! This release includes API enhancements that warranted a new minor version instead of a maintenance release for version 7.8.2. However, you can upgrade from 7.8.2 to 7.8.4 without issue.

title: Highlights

text:
This version offers:

- Certificate-based authentication for the REST API

- Dry run option to validate Redis ACL REST API requests

title: New in this release

title: New features

text:
- Certificate-based authentication for the REST API

    - Added support for certificate-based authentication to enable secure, passwordless access to the Redis Software REST API.

    - Certificate-based authentication can be used in addition to basic authentication with a username and password.

    - To set up certificate-based authentication, use [REST API]() requests to do the following:

        1. Configure a trusted CA certificate `mtls_trusted_ca` using an [update cluster certificate]() request:

            [code example]

        1. [Update cluster settings]() with mutual TLS configuration:

            [code example]

        1. Include `"auth_method": "certificate"` and `certificate_subject_line` in the request body when you [create new users]() or [update existing users]():

            [code example]

    - Limitations:

        - Certificate-based authentication is not implemented for the Cluster Manager UI.

title: Enhancements

text:
- If you create or update a Redis ACL using the REST API, you can use the `dry_run` query parameter to validate the request without actually applying the update.

    - [Create Redis ACL]() example request:

        [code example]

    - [Update Redis ACL]() example request:

        [code example]

title: Redis database versions

text:
Redis Software version 7.8.4 includes three Redis database versions: 7.4.0, 7.2.4, and 6.2.13.

The [default Redis database version]() is 7.4.

title: Redis module feature sets

title: Resolved issues

text:
- RS137337: Maintenance mode tasks are no longer incorrectly marked as `aborted` when the primary node is demoted.

- RS125921: Fixed a PDNS server script to ensure the symbolic links are not expanded.

- RS142457: Fixed an issue in the Cluster Manager UI where incorrect FQDN information was shown for Active-Active databases in Kubernetes.

- RS134410: Removed dependency test files that contain TLS keys from the Python install for Kubernetes.

- RS136270: Changed the owner and group of the `rlec_supervisor.service` file to `root:root` instead of `redislabs:redislabs` to improve security.

- RS142166: Fixed the representation of available RAM.

title: Version changes

title: Supported platforms

title: Downloads

text:
The following table shows the SHA256 checksums for the available packages:

| Package | SHA256 checksum (7.8.4-18 Dec release) |
|---------|---------------------------------------|
| Ubuntu 20 | 1aee0b6cee72b6ceae73951611ac2073d8905189174c731561f1228c16cbcc3a |
| Red Hat Enterprise Linux (RHEL) 8 | cceb563d56221d391667dd302ac334b5d98e3a8dc59bc479a79fe9b83c1634d6 |
| Red Hat Enterprise Linux (RHEL) 9 | 396b2eeafe9b4a75aa8579b4d618ca7f2df8619b1256aeec7863c80ecba7703a |
| Amazon Linux 2 | 56e18f73fb8507fec476d9b59a00ed1b5fcc52b80005a749b869650641e6f6f6 |

title: Known issues

text:
- RS131972: Creating an ACL that contains a line break in the Cluster Manager UI can cause shard migration to fail due to ACL errors.

- RS151990: For RHEL 8 and RHEL 9 clusters, importing an RDB file can fail with the exception: `Failed to import rdb file: general-error`.

    As a workaround:

    1. On each cluster node, run:

        [code example]

    1. Verify that `libboost_program_options.so.1.75.0` points to a path to confirm the installation succeeded:

        [code example]

title: Known limitations

title: Security

text:
#### Open source Redis security fixes compatibility

As part of Redis's commitment to security, Redis Software implements the latest [security fixes](https://github.com/redis/redis/releases) available with [open source Redis](https://github.com/redis/redis). Redis Software has already included the fixes for the relevant CVEs.

Some CVEs announced for open source Redis do not affect Redis Software due to different or additional functionality available in Redis Software that is not available in open source Redis.

Redis Software 7.8.4-18 supports open source Redis 7.4, 7.2, and 6.2. Below is the list of open source Redis CVEs fixed by version.

Redis 7.2.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.2.1)

Redis 7.0.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.0.13)

- (CVE-2023-36824) Extracting key names from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading random heap memory, heap corruption, and potentially remote code execution. Specifically: using `COMMAND GETKEYS*` and validation of key names in ACL rules. (Redis 7.0.12)

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 7.0.11)

- (CVE-2023-28425) Specially crafted `MSETNX` commands can lead to assertion and denial-of-service. (Redis 7.0.10)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 7.0.9)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 7.0.8)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 7.0.9)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 7.0.8)

- (CVE-2022-35951) Executing an `XAUTOCLAIM` command on a stream key in a specific state, with a specially crafted `COUNT` argument, may cause an integer overflow, a subsequent heap overflow, and potentially lead to remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.5)

- (CVE-2022-31144) A specially crafted `XAUTOCLAIM` command on a stream key in a specific state may result in heap overflow and potentially remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.4)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 7.0.12)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 7.0.0)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 7.0.0)

Redis 6.2.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 6.2.12)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 6.2.11)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 6.2.9)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 6.2.11)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 6.2.9)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 6.2.13)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 6.2.7)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 6.2.7)

- (CVE-2021-41099) Integer to heap buffer overflow handling certain string commands and network payloads, when `proto-max-bulk-len` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32762) Integer to heap buffer overflow issue in `redis-cli` and `redis-sentinel` parsing large multi-bulk replies on some older and less common platforms. (Redis 6.2.6)

- (CVE-2021-32761) An integer overflow bug in Redis version 2.2 or newer can be exploited using the `BITFIELD` command to corrupt the heap and potentially result with remote code execution. (Redis 6.2.5)

- (CVE-2021-32687) Integer to heap buffer overflow with intsets, when `set-max-intset-entries` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32675) Denial Of Service when processing RESP request payloads with a large number of elements on many connections. (Redis 6.2.6)

- (CVE-2021-32672) Random heap reading issue with Lua Debugger. (Redis 6.2.6)

- (CVE-2021-32628) Integer to heap buffer overflow handling ziplist-encoded data types, when configuring a large, non-default value for `hash-max-ziplist-entries`, `hash-max-ziplist-value`, `zset-max-ziplist-entries` or `zset-max-ziplist-value`. (Redis 6.2.6)

- (CVE-2021-32627) Integer to heap buffer overflow issue with streams, when configuring a non-default, large value for `proto-max-bulk-len` and `client-query-buffer-limit`. (Redis 6.2.6)

- (CVE-2021-32626) Specially crafted Lua scripts may result with Heap buffer overflow. (Redis 6.2.6)

- (CVE-2021-32625) An integer overflow bug in Redis version 6.0 or newer can be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. (Redis 6.2.4)

- (CVE-2021-29478) An integer overflow bug in Redis 6.2 could be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration value, creating a large set key that consists of integer values and using the COPY command to duplicate it. The integer overflow bug exists in all versions of Redis starting with 2.6, where it could result with a corrupted RDB or DUMP payload, but not exploited through COPY (which did not exist before 6.2). (Redis 6.2.3)

- (CVE-2021-29477) An integer overflow bug in Redis version 6.0 or newer could be exploited using the STRALGO LCS command to corrupt the heap and potentially result in remote code execution. The integer overflow bug exists in all versions of Redis starting with 6.0. (Redis 6.2.3)

code:
PUT /v1/cluster/update_cert
            {
              "name": "mtls_trusted_ca",
              "certificate": "<content of certificate PEM file>"
            }

section_id: new-features

code:
PUT /v1/cluster
            {
              "mtls_certificate_authentication": true,
              "mtls_client_cert_subject_validation_type": "san_cn",
              "mtls_authorized_subjects": [{
                "CN": "test",
                "OU": [],
                "O": "",
                "C": "",
                "L": "",
                "ST": ""
              }]
            }

code:
POST /v1/users | PUT /v1/users/<user-id>
            {
              "auth_method": "certificate",
              "certificate_subject_line": "<subject of the user's client certificate>"
            }

code: POST /v1/redis_acls?dry_run

section_id: enhancements

code: PUT /v1/redis_acls/<uid>?dry_run

code: sudo dnf install boost-program-options

section_id: known-issues

code: ldd /opt/redislabs/bin/rl_rdbloader


title: Redis Software release notes 7.8.4-66 (February 2025)

summary: Ubuntu 22 support. Bug fixes for crashes, unexpected restarts, and incorrect type for the automatically calculated replica buffer.

title: Overview

text: This is a maintenance release for [Redis Software version 7.8.4](https://redis.io/downloads/#software).

title: Highlights

text:
This version offers:

- Ubuntu 22 support

- Bug fixes for crashes, unexpected restarts, and incorrect type for the automatically calculated replica buffer

title: New in this release

title: New features

text: - Added support for Ubuntu 22. See [Upgrade a cluster's operating system]() for detailed upgrade instructions.

title: Redis database versions

title: Redis module feature sets

text:
Redis Software comes packaged with several modules. As of version 7.8.2, Redis Software includes three feature sets, compatible with different Redis database versions.

The following table shows which Redis modules are compatible with each Redis database version included in this release.

| Redis database version | Compatible Redis modules |
|------------------------|--------------------------|
| 7.4 | [RediSearch 2.10]()
[RedisJSON 2.8]()
[RedisTimeSeries 1.12]()
[RedisBloom 2.8]() |
| 7.2 | [RediSearch 2.8]()
[RedisJSON 2.6]()
[RedisTimeSeries 1.10]()
[RedisBloom 2.6]() |
| 6.2 | [RediSearch 2.6]()
[RedisJSON 2.4]()
[RedisTimeSeries 1.8]()
[RedisBloom 2.4]()
[RedisGraph v2.10]()[1](#module-note-1)  |

1. RedisGraph end-of-life has been announced and will be removed in a future release. See the [RedisGraph end-of-life announcement](https://redis.io/blog/redisgraph-eol/) for more details.

title: Resolved issues

text:
- RS146125: Fixed an issue with the CCS cached context that could cause crashes.

- RS145856: Fixed the automatically calculated replica buffer's type from float to integer.

- RS146282: Fixed a missing Prisma dependency for OpenSSL 1.0 that caused unexpected `cm_server` restarts on Ubuntu 20.

- RS103760: Added a check that blocks upgrading Redis Software on a node while there are running state machines to prevent data loss or unavailability.

- RS148302: Fixed a dependency issue that can cause the installation of Redis Software version 7.8.4 to fail.

title: Version changes

title: Supported platforms

text:
The following table provides a snapshot of supported platforms as of this Redis Software release. See the [supported platforms reference]() for more details about operating system compatibility.

✅ Supported – The platform is supported for this version of Redis Software and Redis Stack modules.

:warning: Deprecation warning – The platform is still supported for this version of Redis Software, but support will be removed in a future release.

| Redis Software
major versions | 7.8 | 7.4 | 7.2 | 6.4 | 6.2 |
|---------------------------------|:-----:|:-----:|:-----:|:-----:|:-----:|
| **Release date** | Nov 2024 | Feb 2024 | Aug 2023 | Feb 2023 | Aug 2021 |
| [**End-of-life date**]() | Determined after
next major release | Nov 2026 | Feb 2026 | Aug 2025 | Feb 2025 |
| **Platforms** | | | | | |
| RHEL 9 &
compatible distros[1](#table-note-1) | ✅ | ✅ | – | – | – |
| RHEL 9
FIPS mode[5](#table-note-5) | ✅ | – | – | – | – |
| RHEL 8 &
compatible distros[1](#table-note-1) | ✅ | ✅ | ✅ | ✅ | ✅ |
| RHEL 7 &
compatible distros[1](#table-note-1) | – | – | :warning: | :warning: | :warning: |
| Ubuntu 22.04[2](#table-note-2) | ✅ | – | – | – | – |
| Ubuntu 20.04[2](#table-note-2) | ✅ | ✅ | ✅ | ✅ | – |
| Ubuntu 18.04[2](#table-note-2) | – | :warning: | :warning: | :warning: | :warning: |
| Ubuntu 16.04[2](#table-note-2) | – | – | :warning: | :warning:| :warning: |
| Amazon Linux 2 | ✅ | ✅ | ✅ | ✅ | – |
| Amazon Linux 1 | – | – | :warning: | :warning: | :warning: |
| Kubernetes[3](#table-note-3) | ✅ | ✅ | ✅ | ✅ | ✅ |
| Docker[4](#table-note-4) | ✅ | ✅ | ✅ | ✅ | ✅ |

1. The RHEL-compatible distributions CentOS, CentOS Stream, Alma, and Rocky are supported if they have full RHEL compatibility. Oracle Linux running the Red Hat Compatible Kernel (RHCK) is supported, but the Unbreakable Enterprise Kernel (UEK) is not supported.

2. The server version of Ubuntu is recommended for production installations. The desktop version is only recommended for development deployments.

3. See the [Redis Enterprise for Kubernetes documentation]() for details about support per version and Kubernetes distribution.

4. [Docker images]() of Redis Software are certified for development and testing only.

5. Supported only if [FIPS was enabled during RHEL installation](https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/security_hardening/switching-rhel-to-fips-mode_security-hardening#proc_installing-the-system-with-fips-mode-enabled_switching-rhel-to-fips-mode) to ensure FIPS compliance.

title: Downloads

text:
The following table shows the SHA256 checksums for the available packages:

| Package | SHA256 checksum (7.8.4-66 Feb release) |
|---------|---------------------------------------|
| Ubuntu 20 | 5b14894713d118688a9b21d63edd5208cd6b0d5a2a035ecd67589d33d5ddfbbb |
| Ubuntu 22 | fb4dda7c75c6ded114073edd0632257cc56c52e92ce1e8d286070d5adc593431 |
| Red Hat Enterprise Linux (RHEL) 8 | 1d6b0579c6af5e57e045b051bd0026638ac0eb224266b19a8d4be1e1135d05ea |
| Red Hat Enterprise Linux (RHEL) 9 | fa74e1864eb72aafe6428ee3aa7bc0fb491b637d4bdf11be785f67fbca7130e6 |
| Amazon Linux 2 | 748268cb234d828c0dc1542ac0e0d4ff74363a2008ee473c08abe1d949bc850d |

title: Known issues

title: Known limitations

text:
#### Upload modules before OS upgrade

If the cluster contains any databases that use modules, you must upload module packages for the target OS version to a node in the existing cluster before you upgrade the cluster's operating system.

See [Upgrade a cluster's operating system]() for detailed upgrade instructions.

#### New Cluster Manager UI limitations

The following legacy UI features are not yet available in the new Cluster Manager UI:

- Purge an Active-Active instance.

    Use [`crdb-cli crdb purge-instance`]() instead.

- Search and export the log.

#### RedisGraph prevents upgrade to RHEL 9

You cannot upgrade from a prior RHEL version to RHEL 9 if the Redis Software cluster contains a RedisGraph module, even if unused by any database. The [RedisGraph module has reached End-of-Life](https://redis.com/blog/redisgraph-eol/) and is completely unavailable in RHEL 9.

#### Query results might include hash keys with lazily expired fields

If one or more fields of a hash key expire after an `FT.SEARCH` or `FT.AGGREGATE` query begins, Redis does not account for these lazily expired fields. As a result, keys with expired fields might still be included in the query results, leading to potentially incorrect or inconsistent results.

title: Security

text:
#### Open source Redis security fixes compatibility

As part of Redis's commitment to security, Redis Software implements the latest [security fixes](https://github.com/redis/redis/releases) available with [open source Redis](https://github.com/redis/redis). Redis Software has already included the fixes for the relevant CVEs.

Some CVEs announced for open source Redis do not affect Redis Software due to different or additional functionality available in Redis Software that is not available in open source Redis.

Redis Software 7.8.4-66 supports open source Redis 7.4, 7.2, and 6.2. Below is the list of open source Redis CVEs fixed by version.

Redis 7.2.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.2.1)

Redis 7.0.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.0.13)

- (CVE-2023-36824) Extracting key names from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading random heap memory, heap corruption, and potentially remote code execution. Specifically: using `COMMAND GETKEYS*` and validation of key names in ACL rules. (Redis 7.0.12)

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 7.0.11)

- (CVE-2023-28425) Specially crafted `MSETNX` commands can lead to assertion and denial-of-service. (Redis 7.0.10)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 7.0.9)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 7.0.8)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 7.0.9)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 7.0.8)

- (CVE-2022-35951) Executing an `XAUTOCLAIM` command on a stream key in a specific state, with a specially crafted `COUNT` argument, may cause an integer overflow, a subsequent heap overflow, and potentially lead to remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.5)

- (CVE-2022-31144) A specially crafted `XAUTOCLAIM` command on a stream key in a specific state may result in heap overflow and potentially remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.4)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 7.0.12)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 7.0.0)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 7.0.0)

Redis 6.2.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 6.2.12)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 6.2.11)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 6.2.9)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 6.2.11)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 6.2.9)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 6.2.13)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 6.2.7)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 6.2.7)

- (CVE-2021-41099) Integer to heap buffer overflow handling certain string commands and network payloads, when `proto-max-bulk-len` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32762) Integer to heap buffer overflow issue in `redis-cli` and `redis-sentinel` parsing large multi-bulk replies on some older and less common platforms. (Redis 6.2.6)

- (CVE-2021-32761) An integer overflow bug in Redis version 2.2 or newer can be exploited using the `BITFIELD` command to corrupt the heap and potentially result with remote code execution. (Redis 6.2.5)

- (CVE-2021-32687) Integer to heap buffer overflow with intsets, when `set-max-intset-entries` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32675) Denial Of Service when processing RESP request payloads with a large number of elements on many connections. (Redis 6.2.6)

- (CVE-2021-32672) Random heap reading issue with Lua Debugger. (Redis 6.2.6)

- (CVE-2021-32628) Integer to heap buffer overflow handling ziplist-encoded data types, when configuring a large, non-default value for `hash-max-ziplist-entries`, `hash-max-ziplist-value`, `zset-max-ziplist-entries` or `zset-max-ziplist-value`. (Redis 6.2.6)

- (CVE-2021-32627) Integer to heap buffer overflow issue with streams, when configuring a non-default, large value for `proto-max-bulk-len` and `client-query-buffer-limit`. (Redis 6.2.6)

- (CVE-2021-32626) Specially crafted Lua scripts may result with Heap buffer overflow. (Redis 6.2.6)

- (CVE-2021-32625) An integer overflow bug in Redis version 6.0 or newer can be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. (Redis 6.2.4)

- (CVE-2021-29478) An integer overflow bug in Redis 6.2 could be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration value, creating a large set key that consists of integer values and using the COPY command to duplicate it. The integer overflow bug exists in all versions of Redis starting with 2.6, where it could result with a corrupted RDB or DUMP payload, but not exploited through COPY (which did not exist before 6.2). (Redis 6.2.3)

- (CVE-2021-29477) An integer overflow bug in Redis version 6.0 or newer could be exploited using the STRALGO LCS command to corrupt the heap and potentially result in remote code execution. The integer overflow bug exists in all versions of Redis starting with 6.0. (Redis 6.2.3)


title: Redis Software release notes 7.8.4-95 (March 2025)

summary: Bug fixes for server restart failures during upgrades, connectivity checks for optional services, swapped shard status and watchdog status values in `rladmin`, process exporter crashes, and a syncer issue for Active-Active databases that have the OSS Cluster API enabled.

title: Overview

title: Highlights

text:
This version offers:

- Bug fixes for server restart failures during upgrades, connectivity checks for optional services, swapped shard status and watchdog status values in `rladmin`, process exporter crashes, and a syncer issue for Active-Active databases that have the OSS Cluster API enabled

title: New in this release

title: Redis database versions

title: Redis module feature sets

title: Resolved issues

text:
- RS134225: Fixed an issue where the server restart could fail during cluster upgrade due to a timeout.

- RS138625: Fixed an issue where `rlcheck` reported `verify_tcp_connectivity` as failed for optional services that were not enabled instead of skipping the checks.

- RS146525: Fixed an `rladmin status` issue that swapped the shard `STATUS` and `WATCHDOG_STATUS` values.

- RS143339: Fixed an issue where an ambiguous path could cause the process exporter to crash with the error: "`flag provided but not defined: -remove-empty-groups`".

- RS150588: Fixed a syncer issue that could cause data inconsistency or loss in Active-Active databases when the OSS Cluster API is enabled.

title: Version changes

title: Supported platforms

text:
The following table provides a snapshot of supported platforms as of this Redis Software release. See the [supported platforms reference]() for more details about operating system compatibility.

✅ Supported – The platform is supported for this version of Redis Software and Redis Stack modules.

:warning: Deprecation warning – The platform is still supported for this version of Redis Software, but support will be removed in a future release.

| Redis Software
major versions | 7.8 | 7.4 | 7.2 | 6.4 | 6.2 |
|---------------------------------|:-----:|:-----:|:-----:|:-----:|:-----:|
| **Release date** | Nov 2024 | Feb 2024 | Aug 2023 | Feb 2023 | Aug 2021 |
| [**End-of-life date**]() | Determined after
next major release | Nov 2026 | Feb 2026 | Aug 2025 | Feb 2025 |
| **Platforms** | | | | | |
| RHEL 9 &
compatible distros[1](#table-note-1) | ✅ | ✅ | – | – | – |
| RHEL 9
FIPS mode[5](#table-note-5) | ✅ | – | – | – | – |
| RHEL 8 &
compatible distros[1](#table-note-1) | ✅ | ✅ | ✅ | ✅ | ✅ |
| RHEL 7 &
compatible distros[1](#table-note-1) | – | – | :warning: | :warning: | :warning: |
| Ubuntu 22.04[2](#table-note-2) | ✅ | – | – | – | – |
| Ubuntu 20.04[2](#table-note-2) | ✅ | ✅ | ✅ | ✅ | – |
| Ubuntu 18.04[2](#table-note-2) | – | :warning: | :warning: | :warning: | :warning: |
| Ubuntu 16.04[2](#table-note-2) | – | – | :warning: | :warning: | :warning: |
| Amazon Linux 2 | ✅ | ✅ | ✅ | ✅ | – |
| Amazon Linux 1 | – | – | :warning: | :warning: | :warning: |
| Kubernetes[3](#table-note-3) | ✅ | ✅ | ✅ | ✅ | ✅ |
| Docker[4](#table-note-4) | ✅ | ✅ | ✅ | ✅ | ✅ |

1. The RHEL-compatible distributions CentOS, CentOS Stream, Alma, and Rocky are supported if they have full RHEL compatibility. Oracle Linux running the Red Hat Compatible Kernel (RHCK) is supported, but the Unbreakable Enterprise Kernel (UEK) is not supported.

2. The server version of Ubuntu is recommended for production installations. The desktop version is only recommended for development deployments.

3. See the [Redis Enterprise for Kubernetes documentation]() for details about support per version and Kubernetes distribution.

4. [Docker images]() of Redis Software are certified for development and testing only.

5. Supported only if [FIPS was enabled during RHEL installation](https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/security_hardening/switching-rhel-to-fips-mode_security-hardening#proc_installing-the-system-with-fips-mode-enabled_switching-rhel-to-fips-mode) to ensure FIPS compliance.

title: Downloads

text:
The following table shows the SHA256 checksums for the available packages:

| Package | SHA256 checksum (7.8.4-95 March release) |
|---------|---------------------------------------|
| Ubuntu 20 | f7b98686e0b0a6dd72cef0c59b0d5a6126e716251e8606df2e0296e714e89854 |
| Ubuntu 22 | b2bda6ed49edcae32cac5bf67dcdcc3fc1baca47945b3c0a9e7c5a11bee4839f |
| Red Hat Enterprise Linux (RHEL) 8 | cecaa7aa9db1a2b93b91389bd7b5958af26d2cfb5c4fc5d393dbc83370156aad |
| Red Hat Enterprise Linux (RHEL) 9 | 8f62996176ba58a073b66c0623f3a280c7fe0f25358d727df375021354d4464f |
| Amazon Linux 2 | baea0cdada0ac42d38035b8ca826eabc2077256e2633b8cea5ff5010ff0ac53d |

title: Known issues

title: Known limitations

title: Security

text:
#### Open source Redis security fixes compatibility

As part of Redis's commitment to security, Redis Software implements the latest [security fixes](https://github.com/redis/redis/releases) available with [open source Redis](https://github.com/redis/redis). Redis Software has already included the fixes for the relevant CVEs.

Some CVEs announced for open source Redis do not affect Redis Software due to different or additional functionality available in Redis Software that is not available in open source Redis.

Redis Software 7.8.4-95 supports open source Redis 7.4, 7.2, and 6.2. Below is the list of open source Redis CVEs fixed by version.

Redis 7.4.x:

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

Redis 7.2.x:

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.2.1)

Redis 7.0.x:

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

- (CVE-2023-41053) Redis does not correctly identify keys accessed by `SORT_RO` and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.0.13)

- (CVE-2023-36824) Extracting key names from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading random heap memory, heap corruption, and potentially remote code execution. Specifically: using `COMMAND GETKEYS*` and validation of key names in ACL rules. (Redis 7.0.12)

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 7.0.11)

- (CVE-2023-28425) Specially crafted `MSETNX` commands can lead to assertion and denial-of-service. (Redis 7.0.10)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 7.0.9)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 7.0.8)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 7.0.9)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 7.0.8)

- (CVE-2022-35951) Executing an `XAUTOCLAIM` command on a stream key in a specific state, with a specially crafted `COUNT` argument, may cause an integer overflow, a subsequent heap overflow, and potentially lead to remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.5)

- (CVE-2022-31144) A specially crafted `XAUTOCLAIM` command on a stream key in a specific state may result in heap overflow and potentially remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.4)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 7.0.12)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 7.0.0)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 7.0.0)

Redis 6.2.x:

- (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

- (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

- (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as `KEYS`, `SCAN`, `PSUBSCRIBE`, `FUNCTION LIST`, `COMMAND LIST`, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

- (CVE-2023-28856) Authenticated users can use the `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access. (Redis 6.2.12)

- (CVE-2023-25155) Specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 6.2.11)

- (CVE-2023-22458) Integer overflow in the Redis `HRANDFIELD` and `ZRANDMEMBER` commands can lead to denial-of-service. (Redis 6.2.9)

- (CVE-2022-36021) String matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 6.2.11)

- (CVE-2022-35977) Integer overflow in the Redis `SETRANGE` and `SORT`/`SORT_RO` commands can drive Redis to OOM panic. (Redis 6.2.9)

- (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 6.2.13)

- (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the `redis-server` process. This issue affects all versions of Redis. (Redis 6.2.7)

- (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 6.2.7)

- (CVE-2021-41099) Integer to heap buffer overflow handling certain string commands and network payloads, when `proto-max-bulk-len` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32762) Integer to heap buffer overflow issue in `redis-cli` and `redis-sentinel` parsing large multi-bulk replies on some older and less common platforms. (Redis 6.2.6)

- (CVE-2021-32761) An integer overflow bug in Redis version 2.2 or newer can be exploited using the `BITFIELD` command to corrupt the heap and potentially result with remote code execution. (Redis 6.2.5)

- (CVE-2021-32687) Integer to heap buffer overflow with intsets, when `set-max-intset-entries` is manually configured to a non-default, very large value. (Redis 6.2.6)

- (CVE-2021-32675) Denial Of Service when processing RESP request payloads with a large number of elements on many connections. (Redis 6.2.6)

- (CVE-2021-32672) Random heap reading issue with Lua Debugger. (Redis 6.2.6)

- (CVE-2021-32628) Integer to heap buffer overflow handling ziplist-encoded data types, when configuring a large, non-default value for `hash-max-ziplist-entries`, `hash-max-ziplist-value`, `zset-max-ziplist-entries` or `zset-max-ziplist-value`. (Redis 6.2.6)

- (CVE-2021-32627) Integer to heap buffer overflow issue with streams, when configuring a non-default, large value for `proto-max-bulk-len` and `client-query-buffer-limit`. (Redis 6.2.6)

- (CVE-2021-32626) Specially crafted Lua scripts may result with Heap buffer overflow. (Redis 6.2.6)

- (CVE-2021-32625) An integer overflow bug in Redis version 6.0 or newer can be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. (Redis 6.2.4)

- (CVE-2021-29478) An integer overflow bug in Redis 6.2 could be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration value, creating a large set key that consists of integer values and using the COPY command to duplicate it. The integer overflow bug exists in all versions of Redis starting with 2.6, where it could result with a corrupted RDB or DUMP payload, but not exploited through COPY (which did not exist before 6.2). (Redis 6.2.3)

- (CVE-2021-29477) An integer overflow bug in Redis version 6.0 or newer could be exploited using the STRALGO LCS command to corrupt the heap and potentially result in remote code execution. The integer overflow bug exists in all versions of Redis starting with 6.0. (Redis 6.2.3)