Description
The AvahiDnsPacket function in avahi-core/socket.c in avahi-daemon in Avahi 0.6.16 and 0.6.25 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a DNS packet with an invalid checksum followed by a DNS packet with a valid checksum, a different vulnerability than CVE-2008-5081.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | avahi | 0.6.26-1 | — |
| Debian 13 | avahi | 0.6.26-1 | — |
| Debian 12 | avahi | 0.6.26-1 | — |
| Debian 5.0 | avahi | 0.6.23-3lenny2 | DSA-2086-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | avahi +10 | 0.6.16-9.el5_5 | RHSA-2010:0528 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | avahi | 0.6.32-2.3 | openSUSE-SU-2024:10363-1 |
Advisories 3
- RHSA-2010:0528 Red Hat Security Advisory: avahi security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2086-1 avahi - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10363-1 avahi-0.6.32-2.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [oss-security] 20100625 Re: CVE Request: avahi DoS mailing-list
- [oss-security] 20100623 CVE Request: avahi DoS mailing-list
- FEDORA-2010-10584 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=607293
- MDVSA-2010:204 vendor-advisory
- 1024200 vdb-entry
- DSA-2086 vendor-advisory
- FEDORA-2010-10581 vendor-advisory