CVE-2026-90947

Name	CVE-2026-90947
Description	A flaw was found in GIMP. When processing a specially crafted lighting preset file, the Lighting Effects filter does not properly validate the number of light sources. This can lead to an out-of-bounds write, corrupting memory. An attacker could exploit this by convincing a user to open a malicious preset file, potentially causing a crash or enabling arbitrary code execution.
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)
References	DSA-6509-1
Debian Bugs	1148481

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
gimp (PTS)	bookworm, bookworm (security)	2.10.34-1+deb12u10	vulnerable
	trixie	3.0.4-3+deb13u10	vulnerable
	trixie (security)	3.0.4-3+deb13u11	fixed
	forky, sid	3.2.6-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
gimp	source	trixie	3.0.4-3+deb13u11		DSA-6509-1
gimp	source	(unstable)	3.2.6-1			1148481

Notes

https://gitlab.gnome.org/GNOME/gimp/-/work_items/16682
https://gitlab.gnome.org/GNOME/gimp/-/merge_requests/2960
Fixed by: https://gitlab.gnome.org/GNOME/gimp/-/commit/8a680c38fe84d529255e6b2916951ae7c480ed2c (master)
Fixed by: https://gitlab.gnome.org/GNOME/gimp/-/commit/2360b2edd14b2436fc82017854027e916598439b (GIMP_3_2_6)