SUSE-SU-2026:21633-1: moderate: Security update for dnsmasq

[SLE-UPDATES]

# Security update for dnsmasq

Announcement ID: SUSE-SU-2026:21633-1  
Release Date: 2026-05-12T09:35:20Z  
Rating: moderate  
References:

  * bsc#1235517
  * bsc#1235834
  * bsc#1258251

  
Cross-References:

  * CVE-2026-2291

  
CVSS scores:

  * CVE-2026-2291 ( SUSE ):  9.2
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-2291 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-2291 ( NVD ):  7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

  
Affected Products:

  * SUSE Linux Micro 6.1

  
  
An update that solves one vulnerability and has two fixes can now be installed.

## Description:

This update for dnsmasq fixes the following issues:

  * CVE-2026-2291: Fixed a bug that could have been abused to record false
    cached data enabling DoS or attacker redirect. (bsc#1258251)

## 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 Micro 6.1  
    zypper in -t patch SUSE-SLE-Micro-6.1-523=1

## Package List:

  * SUSE Linux Micro 6.1 (aarch64 ppc64le s390x x86_64)
    * dnsmasq-debuginfo-2.90-slfo.1.1_2.1
    * dnsmasq-debugsource-2.90-slfo.1.1_2.1
    * dnsmasq-2.90-slfo.1.1_2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-2291.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1235517
  * https://bugzilla.suse.com/show_bug.cgi?id=1235834
  * https://bugzilla.suse.com/show_bug.cgi?id=1258251

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