CVE-2026-90948

Name	CVE-2026-90948
Description	A flaw was found in GIMP's ICO file loader. When processing an ICO file containing an embedded PNG image, an integer overflow can occur during the calculation of the required buffer size. This leads to an undersized buffer being allocated, causing a heap-based buffer overflow when the decoded pixel data is written. A remote attacker could exploit this by crafting a malicious ICO file, which, when opened, could lead to arbitrary code execution or a crash.
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	1148480

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			1148480

Notes

https://gitlab.gnome.org/GNOME/gimp/-/work_items/16742
Fixed by: https://gitlab.gnome.org/GNOME/gimp/-/commit/123d6360b8d7e2a00a9d913889ee9cdca88e2380 (master)
Fixed by: https://gitlab.gnome.org/GNOME/gimp/-/commit/07c8d365873dc748a11a2df19e7a9eeab1c10667 (gimp-3-2 branch)