CVE-2025-49844

Name	CVE-2025-49844
Description	Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This issue is fixed in version 8.2.2. To workaround this issue without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
redis (PTS)	bullseye	5:6.0.16-1+deb11u2	vulnerable
	bullseye (security)	5:6.0.16-1+deb11u7	vulnerable
	bookworm, bookworm (security)	5:7.0.15-1~deb12u5	vulnerable
	forky, sid, trixie	5:8.0.2-3	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
redis	source	(unstable)	(unfixed)

Notes

https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q
https://github.com/redis/redis/commit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539 (8.2.2)
check redict and valkey forks