RHSA-2025:20926 - Security Advisory

Topic

An update for redis is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Redis 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. For performance, Redis works with an in-memory data set. You can persist it either by dumping the data set to disk every once in a while, or by appending each command to a log.

Security Fix(es):

• redis: Lua library commands may lead to integer overflow and potential RCE (CVE-2025-46817)
• Redis: Redis: Authenticated users can execute LUA scripts as a different user (CVE-2025-46818)
• Redis: Redis is vulnerable to DoS via specially crafted LUA scripts (CVE-2025-46819)
• Redis: Redis Lua Use-After-Free may lead to remote code execution (CVE-2025-49844)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64

Fixes

• BZ - 2401258 - CVE-2025-46817 redis: Lua library commands may lead to integer overflow and potential RCE
• BZ - 2401292 - CVE-2025-46818 Redis: Redis: Authenticated users can execute LUA scripts as a different user
• BZ - 2401322 - CVE-2025-46819 Redis: Redis is vulnerable to DoS via specially crafted LUA scripts
• BZ - 2401324 - CVE-2025-49844 Redis: Redis Lua Use-After-Free may lead to remote code execution
• RHEL-6784 - Redis files under /lib not root owned SCAP finding

CVEs

• CVE-2025-46817
• CVE-2025-46818
• CVE-2025-46819
• CVE-2025-49844

References

• https://access.redhat.com/security/updates/classification/#important