CVE-2026-82324

Name	CVE-2026-82324
Description	A flaw was found in the file-iff (IFF/ILBM) plugin in GIMP. When processing a specially crafted IFF/ILBM image file, the plugin does not properly validate the HAM row size and improperly handles cases where the number of color planes (nPlanes) is zero. This causes a row size mismatch that bypasses memory bounds checking, resulting in heap out-of-bounds reads. This issue can result in an application crash, leading to a denial of service or a limited information disclosure of heap memory contents.
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	1146132

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 (security), trixie	3.0.4-3+deb13u10	vulnerable
	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	(unstable)	3.2.6-1	unimportant		1146132

Notes

https://gitlab.gnome.org/GNOME/gimp/-/work_items/16584
Fixed by: https://gitlab.gnome.org/GNOME/gimp/-/commit/2fba61f28efaebdc170e951e499e42820fbf633a
Building of optional Plug-In for Amiga IFF/ILBM not enabled.