| Name | CVE-2026-34933 |
| Description | Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. Prior to version 0.9-rc4, any unprivileged local user can crash avahi-daemon by sending a single D-Bus method call with conflicting publish flags. This issue has been patched in version 0.9-rc4. |
| 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) |
| Debian Bugs | 1132712 |
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 | 0.8-18 | 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) | 1132712 |
[trixie] - avahi <no-dsa> (Minor issue)
[bookworm] - avahi <no-dsa> (Minor issue)
[bullseye] - avahi <postponed> (Minor issue)
https://github.com/avahi/avahi/security/advisories/GHSA-w65r-6gxh-vhvc
https://github.com/avahi/avahi/pull/891
Fixed by: https://github.com/avahi/avahi/commit/0be89b6bb5c3983837b5e0febcbbbf452ecf7675 (v0.9-rc4)
Test: https://github.com/avahi/avahi/commit/a93fdd980d2db5d453475c0aa2b39946bd6611bd (v0.9-rc4)