CVE-2026-18090

Name	CVE-2026-18090
Description	A flaw was found in gdk-pixbuf. This vulnerability allows a remote attacker to cause a heap out-of-bounds read by providing a specially crafted Apple Icon Image (.icns) file. The uncompress() function, which handles RLE-encoded ICNS icon data, fails to validate the source buffer's boundaries during decompression. This can lead to a denial of service, where the application crashes, or to information disclosure, potentially revealing sensitive data from adjacent 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	1147444

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
gdk-pixbuf (PTS)	bookworm, bookworm (security)	2.42.10+dfsg-1+deb12u4	vulnerable
	trixie (security), trixie	2.42.12+dfsg-4+deb13u1	vulnerable
	forky, sid	2.44.8+dfsg-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
gdk-pixbuf	source	(unstable)	(unfixed)			1147444

Notes

[trixie] - gdk-pixbuf <no-dsa> (Minor issue)
[bookworm] - gdk-pixbuf <postponed> (Minor issue, OOB read)
https://bugzilla.redhat.com/show_bug.cgi?id=2517751
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/308