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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.

PUBLISHED Reserved 2025-06-11 | Published 2025-10-03 | Updated 2025-10-08 | Assigner GitHub_M




CRITICAL: 10.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Problem types

CWE-416: Use After Free

Product status

< 8.2.2
affected

References

github.com/.../redis/security/advisories/GHSA-4789-qfc9-5f9q

github.com/...ommit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539

github.com/redis/redis/releases/tag/8.2.2

cve.org (CVE-2025-49844)

nvd.nist.gov (CVE-2025-49844)

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