CVE-2026-34979

Name	CVE-2026-34979
Description	OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.
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
cups (PTS)	bullseye	2.3.3op2-3+deb11u8	vulnerable
	bullseye (security)	2.3.3op2-3+deb11u10	vulnerable
	bookworm, bookworm (security)	2.4.2-3+deb12u9	vulnerable
	trixie	2.4.10-3+deb13u2	vulnerable
	trixie (security)	2.4.10-3+deb13u1	vulnerable
	forky, sid	2.4.16-1	vulnerable

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

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

https://github.com/OpenPrinting/cups/security/advisories/GHSA-6qxf-7jx6-86fh