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High ALSA-2026:25216 3 CVEs

Important: valkey security update

Published Jun 11, 2026 · Updated Oct 29, 2026

Ecosystem: AlmaLinux

Summary

Valkey is an advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets. You can run atomic operations on these types, like appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection, union and difference; or getting the member with highest ranking in a sorted set. In order to achieve its outstanding performance, Valkey works with an in-memory dataset. Depending on your use case, you can persist it either by dumping the dataset to disk every once in a while, or by appending each command to a log. Valkey also supports trivial-to-setup master-slave replication, with very fast non-blocking first synchronization, auto-reconnection on net split and so forth. Other features include Transactions, Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Valkey behave like a cache. You can use Valkey from most programming languages also.

Security Fix(es):

* redis: use-after-free in unblock client flow may allow remote code execution (CVE-2026-23479)
* redis: Remote code execution via use-after-free in Lua scripting (CVE-2026-23631)
* redis: RESTORE invalid memory access may allow remote code execution (CVE-2026-25243)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 2

ReleasePackageFixed in
AlmaLinux · 10 valkey 8.0.9-1.el10_2
AlmaLinux · 10 valkey-devel 8.0.9-1.el10_2

Vulnerabilities 3

  • High 7.7
    CVE-2026-23479 Public exploit

    redis-server use-after-free in unblock client flow may allow remote code execution

    Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked command. If a blocked client is evicted during this flo…

    Redis Redis redis redis Debian Ubuntu Azure Linux Alpine
  • High 7.7
    CVE-2026-25243 Public exploit

    redis-server RESTORE invalid memory access may allow remote code execution

    Redis is an in-memory data structure store. In versions of redis-server up to 8.6.3, the RESTORE command does not properly validate serialized values. An authenticated attacker with permission to execute RESTORE can supply a crafted serialized payload that tr…

    Redis Redis redis redis Debian Ubuntu Azure Linux Alpine
  • Medium 6.1
    CVE-2026-23631 Public exploit

    redis-server Lua use-after-free may allow remote code execution

    Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-free on replicas where replica-read-only is disabled or c…

    Redis Redis redis redis Debian Ubuntu Azure Linux Alpine

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-23479
  • report
    https://access.redhat.com/security/cve/CVE-2026-23631
  • report
    https://access.redhat.com/security/cve/CVE-2026-25243
  • report
    https://bugzilla.redhat.com/2466780
  • report
    https://bugzilla.redhat.com/2466788
  • report
    https://bugzilla.redhat.com/2466828
  • advisory
    https://errata.almalinux.org/10/ALSA-2026-25216.html