CVE-2025-68468

Avahi has a reachable assertion in lookup_multicast_callback

State: Published
Severity: 6.5 Medium
Published: Jan 12, 2026
Updated: Jan 12, 2026
Reserved: Dec 18, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-617 Reachable Assertion

Affected Products

Product	Versions
avahiavahi	<= 0.9-rc2Affected

References

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

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.