d-bus denial of service

About this tag
The d-bus denial of service tag on WindowsForum.com covers vulnerabilities where D-Bus method calls can be exploited to trigger a denial-of-service condition. Recent discussions focus on CVE-2026-34933, a flaw in Avahi's mDNS/DNS-SD infrastructure. A local D-Bus call with conflicting publish flags can hit a reachable assertion in transport_flags_from_domain(), crashing avahi-daemon and disrupting service discovery. This is classified as CWE-617 and is patched in Avahi 0.9-rc4. The tag highlights how availability bugs in D-Bus-accessible services can be as impactful as memory corruption issues.

  1. CVE-2026-34933: Avahi mDNS/DNS-SD Local DoS via D-Bus Reachable Assertion

    CVE-2026-34933 is another reminder that availability bugs in mDNS/DNS-SD infrastructure can be just as operationally painful as memory corruption in more glamorous code paths. In Avahi, a single local D-Bus method call with conflicting publish flags can trip a reachable assertion in...
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    • avahi cve-2026-34933 d-bus denial of service mdns dns sd
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    • Forum: Security Alerts