CVE-2026-28419

Name	CVE-2026-28419
Description	Vim is an open source, command line text editor. Prior to version 9.2.0075, a heap-based buffer underflow exists in Vim's Emacs-style tags file parsing logic. When processing a malformed tags file where a delimiter appears at the start of a line, Vim attempts to read memory immediately preceding the allocated buffer. Version 9.2.0075 fixes the issue.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, 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
	bullseye (security)	2:8.2.2434-3+deb11u3	vulnerable
	bookworm	2:9.0.1378-2+deb12u2	vulnerable
	trixie	2:9.1.1230-2	vulnerable
	forky, sid	2:9.1.2141-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
vim	source	(unstable)	(unfixed)

Notes

https://github.com/vim/vim/security/advisories/GHSA-xcc8-r6c5-hvwv
Fixed by: https://github.com/vim/vim/commit/9b7dfa2948c9e1e5e32a5812812d580c7879f4a0 (v9.2.0075)