CVE-2026-57451

Name	CVE-2026-57451
Description	Vim is an open source, command line text editor. Prior to 9.2.0670, get_text_props() in src/textprop.c reads a uint16 property count stored inline after a line's text and returns it as the number of 32-byte textprop_T entries that follow. The only check is a floor that guarantees room for a single entry; the count is never checked against the amount of data actually present. A line that declares a large count while carrying little data causes consumers to read far past the end of the line buffer. Such a line can be delivered through a crafted undo file, leading to a crash. This vulnerability is fixed in 9.2.0670.
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	2:9.2.0524-1	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-f36c-2qcp-7gpw
Fixed by: https://github.com/vim/vim/commit/b2338ca90643e2f01ecb6547c1172716aaec4f79 (v9.2.0670)