CVE-2026-16768

Name	CVE-2026-16768
Description	A flaw was found in gdk-pixbuf. When parsing a specially crafted ICO file with pixel values that exceed the defined palette range, an out-of-bounds read can occur due to improper bounds checking against the actual palette size. This vulnerability causes heap bytes to be interpreted as valid palette indices and rendered as RGB pixel values in the output image, allowing an attacker to extract heap content via the generated output, such as a thumbnail.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
gdk-pixbuf (PTS)	bullseye	2.42.2+dfsg-1+deb11u2	vulnerable
	bullseye (security)	2.42.2+dfsg-1+deb11u5	vulnerable
	bookworm, bookworm (security)	2.42.10+dfsg-1+deb12u4	vulnerable
	trixie (security), trixie	2.42.12+dfsg-4+deb13u1	vulnerable
	forky, sid	2.44.7+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)

[trixie] - gdk-pixbuf <no-dsa> (Minor issue)
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/302