SUSE-SU-2026:1442-1: moderate: Security update for avahi

[SLE-UPDATES]

# Security update for avahi

Announcement ID: SUSE-SU-2026:1442-1  
Release Date: 2026-04-17T14:19:07Z  
Rating: moderate  
References:

  * bsc#1257235

  
Cross-References:

  * CVE-2026-24401

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

  
Affected Products:

  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for avahi fixes the following issue:

  * CVE-2026-24401: avahi-daemon can be crashed via a segmentation fault by
    sending an unsolicited mDNS response containing a recursive CNAME record
    (bsc#1257235).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-1442=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * libavahi-common3-32bit-0.6.32-32.39.1
    * avahi-utils-0.6.32-32.39.1
    * libavahi-client3-debuginfo-32bit-0.6.32-32.39.1
    * avahi-0.6.32-32.39.1
    * avahi-debugsource-0.6.32-32.39.1
    * avahi-compat-mDNSResponder-devel-0.6.32-32.39.1
    * libavahi-common3-debuginfo-32bit-0.6.32-32.39.1
    * avahi-compat-howl-devel-0.6.32-32.39.1
    * libavahi-client3-0.6.32-32.39.1
    * libavahi-common3-0.6.32-32.39.1
    * libdns_sd-debuginfo-0.6.32-32.39.1
    * libavahi-common3-debuginfo-0.6.32-32.39.1
    * libavahi-core7-0.6.32-32.39.1
    * libdns_sd-debuginfo-32bit-0.6.32-32.39.1
    * avahi-debuginfo-0.6.32-32.39.1
    * avahi-debuginfo-32bit-0.6.32-32.39.1
    * libavahi-devel-0.6.32-32.39.1
    * libavahi-client3-debuginfo-0.6.32-32.39.1
    * libavahi-core7-debuginfo-0.6.32-32.39.1
    * libdns_sd-0.6.32-32.39.1
    * libdns_sd-32bit-0.6.32-32.39.1
    * avahi-utils-debuginfo-0.6.32-32.39.1
    * libavahi-client3-32bit-0.6.32-32.39.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (noarch)
    * avahi-lang-0.6.32-32.39.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-24401.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1257235

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