SUSE alert openSUSE-SU-2026:21014-1 (avahi)

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null@suse.de
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security-announce@lists.opensuse.org
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openSUSE-SU-2026:21014-1: moderate: Security update for avahi
Date:
             
 
Tue, 30 Jun 2026 09:47:55 +0200
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<20260630074755.95F5DFF49@maintenance.suse.de>
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Article
openSUSE security update: security update for avahi
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:21014-1
Rating: moderate
References:

  * bsc#1257235
  * bsc#1261546



Cross-References:

  * CVE-2026-24401
  * CVE-2026-34933



CVSS scores:

  * CVE-2026-24401 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  * CVE-2026-34933 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products:

         openSUSE Leap 16.0

-------------------------------------------------------------

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

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:

  * https://www.suse.com/security/cve/CVE-2026-24401.html
  * https://www.suse.com/security/cve/CVE-2026-34933.html