CVE-2026-106061

Name	CVE-2026-106061
Description	A flaw was found in GIMP’s X cursor (XMC) thumbnail loader. When GIMP generates a thumbnail for a crafted XMC file, it allocates a pixel buffer using a width * height size computed in 32-bit signed arithmetic. If that product overflows, the allocation is smaller than the true image extent. A subsequent GEGL buffer read uses the unwrapped dimensions and performs an out-of-bounds read on the heap (CWE-125), after integer overflow in the size calculation (CWE-190). This can crash GIMP or corrupt process memory.
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	1150241

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	vulnerable
	forky, sid	3.2.6-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
gimp	source	(unstable)	(unfixed)			1150241

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=2546640
https://gitlab.gnome.org/GNOME/gimp/-/work_items/16801
Fixed by: https://gitlab.gnome.org/GNOME/gimp/-/commit/f75c99b283b5b0f476289c4ce89f7b7164032736 (gimp-3-2 branch)