Vulnerability · Published Jan 12, 2026 · Assigned by GitHub_M

CVE-2025-68468Avahi has a reachable assertion in lookup_multicast_callback

Medium 6.5

In plain English

A medium-severity security flaw in avahi from avahi. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 67.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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, avahi-daemon can be crashed by sending unsolicited announcements containing CNAME resource records pointing it to resource records with short TTLs. As soon as they expire avahi-daemon crashes.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Alpine:v3.24	avahi	0.8-r25	ALPINE-CVE-2025-68468
Debian:12	avahi	no fix listed	DEBIAN-CVE-2025-68468
Debian:13	avahi	no fix listed	DEBIAN-CVE-2025-68468
Debian:14	avahi	0.8-18	DEBIAN-CVE-2025-68468
Ubuntu:22.04:LTS	avahi	0.8-5ubuntu5.4	UBUNTU-CVE-2025-68468
Ubuntu:24.04:LTS	avahi	0.8-13ubuntu6.1	UBUNTU-CVE-2025-68468
Ubuntu:25.10	avahi	0.8-16ubuntu3.1	UBUNTU-CVE-2025-68468

Affected products (as reported)

Vendor	Product	Versions
avahi	avahi	<= 0.9-rc2

Weakness: CWE-617 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

https://github.com/avahi/avahi/security/advisories/GHSA-cp79-r4x9-vf52 x_refsource_CONFIRM
https://github.com/avahi/avahi/issues/683 x_refsource_MISC
https://github.com/avahi/avahi/commit/f66be13d7f31a3ef806d226bf8b67240179d309a x_refsource_MISC