CVE-2021-44964

NameCVE-2021-44964
DescriptionUse after free in garbage collector and finalizer of lgc.c in Lua interpreter 5.4.0~5.4.3 allows attackers to perform Sandbox Escape via a crafted script file.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, 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 PackageReleaseVersionStatus
lua5.4 (PTS)bullseye5.4.2-2vulnerable
bookworm5.4.4-3+deb12u1fixed
sid, trixie5.4.7-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
lua5.4source(unstable)5.4.4-1

Notes

[bullseye] - lua5.4 <no-dsa> (Minor issue, GC/finalizer changes intrusive to backport)
http://lua-users.org/lists/lua-l/2021-11/msg00186.html
http://lua-users.org/lists/lua-l/2021-12/msg00007.html
http://lua-users.org/lists/lua-l/2021-12/msg00015.html
http://lua-users.org/lists/lua-l/2021-12/msg00030.html
https://github.com/Lua-Project/lua-5.4.4-sandbox-escape-with-new-vulnerability
https://github.com/lua/lua/commit/0bfc572e51d9035a615ef6e9523f736c9ffa8e57
https://github.com/lua/lua/commit/066e0f93c4901e601d93e31fb700f8f66f95feb8
https://github.com/lua/lua/commit/cf613cdc6fa367257fc61c256f63d917350858b5
https://github.com/lua/lua/commit/86ec152433baf8daf39f03a59c6842cbe33a179d
https://github.com/lua/lua/commit/597a53bbc681089d85b082b46c2e2428dec43b86

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