Vulnerability · Published Jan 12, 2026 · Assigned by GitHub_M
CVE-2025-68471Avahi has a reachable assertion in lookup_start
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 35% 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 65.0% 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 2 unsolicited announcements with CNAME resource records 2 seconds apart.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | avahi | 0.8-r25 | ALPINE-CVE-2025-68471 |
| Debian:12 | avahi | no fix listed | DEBIAN-CVE-2025-68471 |
| Debian:13 | avahi | no fix listed | DEBIAN-CVE-2025-68471 |
| Debian:14 | avahi | 0.8-18 | DEBIAN-CVE-2025-68471 |
| Ubuntu:22.04:LTS | avahi | 0.8-5ubuntu5.4 | UBUNTU-CVE-2025-68471 |
| Ubuntu:24.04:LTS | avahi | 0.8-13ubuntu6.1 | UBUNTU-CVE-2025-68471 |
| Ubuntu:25.10 | avahi | 0.8-16ubuntu3.1 | UBUNTU-CVE-2025-68471 |
Affected products (as reported)
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-56rf-42xr-qmmg x_refsource_CONFIRM
- https://github.com/avahi/avahi/issues/678 x_refsource_MISC
- https://github.com/avahi/avahi/commit/9c6eb53bf2e290aed84b1f207e3ce35c54cc0aa1 x_refsource_MISC