CVE-2024-41957

Name	CVE-2024-41957
Description	Vim is an open source command line text editor. Vim < v9.1.0647 has double free in src/alloc.c:616. When closing a window, the corresponding tagstack data will be cleared and freed. However a bit later, the quickfix list belonging to that window will also be cleared and if that quickfix list points to the same tagstack data, Vim will try to free it again, resulting in a double-free/use-after-free access exception. Impact is low since the user must intentionally execute vim with several non-default flags, but it may cause a crash of Vim. The issue has been fixed as of Vim patch v9.1.0647
Source	CVE (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 Package	Release	Version	Status
vim (PTS)	bullseye	2:8.2.2434-3+deb11u1	vulnerable
	bookworm	2:9.0.1378-2	vulnerable
	trixie	2:9.1.0496-1	vulnerable
	sid	2:9.1.0709-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
vim	source	(unstable)	2:9.1.0698-1	unimportant

Notes

Crash in CLI tool, no security impact
https://github.com/vim/vim/security/advisories/GHSA-f9cr-gv85-hcr4
https://github.com/vim/vim/commit/8a0bbe7b8aad6f8da28dee218c01bc8a0185a2d5 (v9.1.0647)