CVE-2025-68276

Name	CVE-2025-68276
Description	Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, an unprivileged local users can crash avahi-daemon (with wide-area disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be done by either calling the RecordBrowserNew method directly or creating hostname/address/service resolvers/browsers that create those browsers internally themselves.
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
avahi (PTS)	bullseye	0.8-5+deb11u2	vulnerable
	bullseye (security)	0.8-5+deb11u3	vulnerable
	bookworm	0.8-10+deb12u1	vulnerable
	trixie	0.8-16	vulnerable
	forky, sid	0.8-17	vulnerable

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

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

Notes

https://github.com/avahi/avahi/security/advisories/GHSA-mhf3-865v-g5rc
https://github.com/avahi/avahi/pull/806
Fixed by: https://github.com/avahi/avahi/commit/2d48e42d44a183f26a4d12d1f5d41abb9b7c6355