CVE-2026-13002

Name	CVE-2026-13002
Description	A flow has been identified into dnssec.c library, causing an infinite loop to dnsmasq service. An attacker who controls any DNSSEC-signed zone can hang the dnsmasq process with a single crafted response, killing all DNS resolution for its clients.
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
dnsmasq (PTS)	bullseye	2.85-1	vulnerable
	bullseye (security)	2.85-1+deb11u2	vulnerable
	bookworm, bookworm (security)	2.90-4~deb12u2	vulnerable
	trixie (security), trixie	2.91-1+deb13u1	vulnerable
	forky, sid	2.93-1	vulnerable

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

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

https://bugzilla.redhat.com/show_bug.cgi?id=2486360