Redis Lua Use-After-Free may lead to remote code execution (CVE-2025-49844)

Summary

Redis Lua Use-After-Free may lead to remote code execution

Original description

The description as published by the source.

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: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

Affected packages

Bitnami keydb

[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.2.20"},{"introduced":"7.0.0"},{"fixed":"7.2.11"},{"introduced":"7.3.0"},{"fixed":"7.4.6"},{"introduced":"8.0.0"},{"fixed":"8.0.4"},{"introduced":"8.1.0"},{"fixed":"8.2.2"}]}]

Bitnami redis

[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.2.20"},{"introduced":"7.0.0"},{"fixed":"7.2.11"},{"introduced":"7.3.0"},{"fixed":"7.4.6"},{"introduced":"8.0.0"},{"fixed":"8.0.4"},{"introduced":"8.1.0"},{"fixed":"8.2.2"}]}]

Bitnami valkey

[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"7.2.11"},{"introduced":"8.0.0"},{"fixed":"8.0.6"},{"introduced":"8.1.0"},{"fixed":"8.1.4"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Alpine Linux ALPINE-CVE-2025-49844 valkey Fixed in: 7.2.11-r0
Debian DEBIAN-CVE-2025-49844 redict Fixed in: 7.3.6+ds-1
Ubuntu UBUNTU-CVE-2025-49844 lua5.1

References

advisory github.com
advisory nvd.nist.gov
advisory github.com
patch github.com
report github.com
web github.com
web openwall.com