CVE-2026-73075

Name	CVE-2026-73075
Description	Vim is an open source, command line text editor. From 9.2.0469 until 9.2.0843, popup_mark_opacity_zindex() in src/popupwin.c can use a negative w_winrow for a text-property-anchored popup with clipwindow and opacity, indexing before the screen array instead of accounting for w_popup_topoff and causing an out-of-bounds read and conditional write. This issue is fixed in version 9.2.0843.
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	fixed
	bullseye (security)	2:8.2.2434-3+deb11u3	fixed
	bookworm	2:9.0.1378-2+deb12u2	fixed
	trixie	2:9.1.1230-2	fixed
	forky, sid	2:9.2.0858-1	fixed

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

Package	Type	Release	Fixed Version
vim	source	bullseye	(not affected)
vim	source	bookworm	(not affected)
vim	source	trixie	(not affected)
vim	source	(unstable)	2:9.2.0858-1

Notes

[trixie] - vim <not-affected> (Vulnerable code not present)
[bookworm] - vim <not-affected> (Vulnerable code not present)
[bullseye] - vim <not-affected> (Vulnerable code not present)
https://github.com/vim/vim/security/advisories/GHSA-pmvp-6rcj-98p4