CVE-2026-34933

Summary

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.

Affected Software

Weaknesses

• CWE-617: CWE-617: Reachable Assertion

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://github.com/avahi/avahi/security/advisories/GHSA-w65r-6gxh-vhvc

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2026/04/11/9

References

• https://github.com/avahi/avahi/security/advisories/GHSA-w65r-6gxh-vhvc
• https://github.com/avahi/avahi/pull/891
• https://github.com/avahi/avahi/commit/625ca0fac19229f6dfa3a6c6b698ae657187e50c

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