CVE-2026-23868

Name	CVE-2026-23868
Description	Giflib contains a double-free vulnerability that is the result of a shallow copy in GifMakeSavedImage and incorrect error handling. The conditions needed to trigger this vulnerability are difficult but may be possible.
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)
Debian Bugs	1130495

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
giflib (PTS)	bullseye	5.1.9-2	vulnerable
	bookworm	5.2.1-2.5	vulnerable
	forky, sid, trixie	5.2.2-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
giflib	source	(unstable)	(unfixed)			1130495

Notes

https://www.facebook.com/security/advisories/cve-2026-23868
https://sourceforge.net/p/giflib/code/ci/f5b7267aed3665ef025c13823e454170d031c106/tree/gifalloc.c?diff=5146815377b7395944cb683a08c43eee3f631eb7