SUSE-SU-2026:22496-1: important: Security update for dnsmasq

[SLE-UPDATES]

# Security update for dnsmasq

Announcement ID: SUSE-SU-2026:22496-1  
Release Date: 2026-06-29T07:41:58Z  
Rating: important  
References:

  * bsc#1268764

  
Cross-References:

  * CVE-2026-12725
  * CVE-2026-2291
  * CVE-2026-6507

  
CVSS scores:

  * CVE-2026-12725 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-12725 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-12725 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * 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
  * CVE-2026-6507 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-6507 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-6507 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that solves three vulnerabilities can now be installed.

## Description:

This update for dnsmasq fixes the following issues

Update to 2.93:

  * CVE-2026-12725: heap buffer overflow in `log_query()` when logging
    unsupported DS/DNSKEY replies (bsc#1268764).

Changes for dnsmasq:

  * CVE-2026-12725, bsc#1268764: Heap buffer overflow in `log_query()` when
    logging unsupported DS/DNSKEY replies.
  * Fix a corner-case in DNSSEC validation with wildcards.
  * Fix DNSSEC failure with spurious RRSIGs.
  * Fix DNSSEC fail with CNAME replies to DS queries.
  * Fix regression in 2.92 release which broke DHCPv6 when a DHCP relay is in
    use.
  * Modify the inotify implementation so that inotify watches are only created
    after dnsmasq has changed permissions and userid.
  * CVE-2026-2291: Rework storage allocation for domain names.

## 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 16.0  
    zypper in -t patch SUSE-SLES-16.0-1102=1

  * SUSE Linux Enterprise Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-1102=1

## Package List:

  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * dnsmasq-debuginfo-2.93-160000.1.1
    * dnsmasq-utils-2.93-160000.1.1
    * dnsmasq-2.93-160000.1.1
    * dnsmasq-utils-debuginfo-2.93-160000.1.1
  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * dnsmasq-utils-debuginfo-2.93-160000.1.1
    * dnsmasq-utils-2.93-160000.1.1
    * dnsmasq-2.93-160000.1.1
    * dnsmasq-debuginfo-2.93-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-12725.html
  * https://www.suse.com/security/cve/CVE-2026-2291.html
  * https://www.suse.com/security/cve/CVE-2026-6507.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1268764

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