CVE-2022-28805

CRITICAL 9.1CVE-2022-28805 · Published 08/04/2022 · updated 17/06/2026

Package	Affected versions	Patched versions
lua lua	`≥ 5.4.0, < 5.4.5`	`5.4.5`

Description

singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.

References

lua/lua commit 1f3c6f4 · Patch
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RJNJ66IFDUKWJJZXHGOLRGIA3HWWC36R · Third Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHYZOEFDVLVAD6EEP4CDW6DNONIVVHPA · Third Party Advisory
lua-users.org/lists/lua-l/2022-02/msg00001.html · Exploit
lua-users.org/lists/lua-l/2022-02/msg00070.html · Exploit
lua-users.org/lists/lua-l/2022-04/msg00009.html · Exploit
security.gentoo.org/glsa/202305-23 · Third Party Advisory

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