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

opensuse
Calendar Grey June 30, 2026
Scroller Opensuse
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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