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openSUSE Leap 16.0 Avahi Moderate Denial Of Service Crashes 2026-21014-1

opensuse
Calendar Grey June 30, 2026
Dist Opensuse Esm H88
Update for openSUSE addresses two issues in avahi that cause crashes, enhancing overall system stability and reliability.
An update that solves 2 vulnerabilities and has 2 bug fixes can now be installed.

Description

This update for avahi fixes the following issues:

- CVE-2026-34933: reachable assertion in `transport_flags_from_domain` can crash the `avahi-daemon` (bsc#1261546).

- CVE-2026-24401: unsolicited mDNS responses containing a recursive CNAME record can crash the `avahi-daemon`

(bsc#1257235).

Patch instructions:

To install this openSUSE security update use the suse recommended installation methods

like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

zypper in -t patch openSUSE-Leap-16.0-1026=1

Topics%20covered

Topics Covered

security advisory moderate denial of service crash avahi OpenSUSE

Patch

Package List

- openSUSE Leap 16.0:

avahi-0.8-160000.5.1

avahi-autoipd-0.8-160000.5.1

avahi-compat-howl-devel-0.8-160000.5.1

avahi-compat-mDNSResponder-devel-0.8-160000.5.1

avahi-lang-0.8-160000.5.1

avahi-utils-0.8-160000.5.1

avahi-utils-gtk-0.8-160000.5.1

libavahi-client3-0.8-160000.5.1

libavahi-common3-0.8-160000.5.1

libavahi-core7-0.8-160000.5.1

libavahi-devel-0.8-160000.5.1

libavahi-glib-devel-0.8-160000.5.1

libavahi-glib1-0.8-160000.5.1

libavahi-gobject-devel-0.8-160000.5.1

libavahi-gobject0-0.8-160000.5.1

libavahi-libevent1-0.8-160000.5.1

libavahi-qt6-1-0.8-160000.5.1

libavahi-qt6-devel-0.8-160000.5.1

libavahi-ui-gtk3-0-0.8-160000.5.1

libdns_sd-0.8-160000.5.1

libhowl0-0.8-160000.5.1

python3-avahi-gtk-0.8-160000.5.1

python313-avahi-0.8-160000.5.1

typelib-1_0-Avahi-0_6-0.8-160000.5.1

References

* bsc#1257235

* bsc#1261546

References:

* https://www.suse.com/security/cve/CVE-2026-24401.html

* https://www.suse.com/security/cve/CVE-2026-34933.html

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:21014-1
Rating: moderate
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

Topics%20covered

Topics Covered

security advisory moderate denial of service crash avahi OpenSUSE

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