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, an unprivileged local users can crash avahi-daemon (with wide-area disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be done by either calling the RecordBrowserNew method directly or creating hostname/address/service resolvers/browsers that create those browsers internally themselves.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade avahi | Jun 18, 2026 | Jan 12, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade avahi-libs | Mar 10, 2026 | Mar 10, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jan 12, 2026 |
| Ubuntu | — | Upgrade avahi-daemon (Ubuntu Pro)Upgrade avahi-daemon | Jan 20, 2026 | Jan 12, 2026 |
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