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openSUSE dnsmasq Important Buffer Overflow Out-of-Bounds Issues 2026-3028-1

opensuse
Calendar Grey July 15, 2026
Dist Opensuse Esm H88
This update for dnsmasq addresses crucial issues including a buffer overflow and out-of-bounds read, important to secure.
An update that solves two vulnerabilities can now be installed.

Description

This update for dnsmasq fixes the following issues

* CVE-2026-12725: heap buffer overflow in `log_query()` when logging

unsupported DS/DNSKEY replies (bsc#1268764).

* CVE-2026-12969: out-of-bounds read in `find_soa()` due to missing extrabytes

validation (bsc#1268882).

Changes for dnsmasq:

* Update to 2.93:

* 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.

Topics%20covered

Topics Covered

security advisory buffer overflow important out-of-bounds OpenSUSE dnsmasq

Patch

## 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 Micro for Rancher 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-3028=1

* SUSE Linux Enterprise Micro 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-3028=1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4

zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-3028=1

* openSUSE Leap 15.4

zypper in -t patch SUSE-2026-3028=1

* SUSE Linux Enterprise Micro 5.5

zypper in -t patch SUSE-SLE-Micro-5.5-2026-3028=1

* SUSE Linux Enterprise Server 15 SP6 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-3028=1

* Basesystem Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-3028=1

* SUSE Linux Enterprise Server 15 SP4 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-3028=1

* SUSE Linux Enterprise Server 15 SP5 LTSS

zypper in -t patch...

Read the Full Advisory

Package List

* SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)

* dnsmasq-debuginfo-2.93-150400.16.17.1

* dnsmasq-2.93-150400.16.17.1

* SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)

* dnsmasq-debuginfo-2.93-150400.16.17.1

* dnsmasq-2.93-150400.16.17.1

* SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64)

* dnsmasq-debuginfo-2.93-150400.16.17.1

* dnsmasq-2.93-150400.16.17.1

* SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64)

* dnsmasq-debuginfo-2.93-150400.16.17.1

* dnsmasq-2.93-150400.16.17.1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64

x86_64)

* dnsmasq-debuginfo-2.93-150400.16.17.1

* dnsmasq-2.93-150400.16.17.1

* SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)

* dnsmasq-debuginfo-2.93-150400.16.17.1

* dnsmasq-2.93-150400.16.17.1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64

x86_64)

* dnsmasq-debuginfo-2.93-150400.16.17.1

* dnsmasq-2.93-150400.16.17.1

* SUSE Linux...

Read the Full Advisory

References

* bsc#1268764

* bsc#1268882

## References:

* https://www.suse.com/security/cve/CVE-2026-12725.html

* https://www.suse.com/security/cve/CVE-2026-12969.html

* https://bugzilla.suse.com/show_bug.cgi?id=1268764

* https://bugzilla.suse.com/show_bug.cgi?id=1268882

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:3028-1
Release Date: 2026-07-15T09:51:44Z
Affected Products: * Basesystem Module 15-SP7 * openSUSE Leap 15.4 * SUSE Linux Enterprise Desktop 15 SP7 * SUSE Linux Enterprise High Performance Computing 15 SP4 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Micro 5.5 * SUSE Linux Enterprise Micro for Rancher 5.3 * SUSE Linux Enterprise Micro for Rancher 5.4 * SUSE Linux Enterprise Real Time 15 SP7 * SUSE Linux Enterprise Server 15 SP4 * SUSE Linux Enterprise Server 15 SP4 LTSS * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server 15 SP5 LTSS * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server 15 SP6 LTSS * SUSE Linux Enterprise Server 15 SP7 * SUSE Linux Enterprise Server for SAP Applications 15 SP4 * SUSE Linux Enterprise Server for SAP Applications 15 SP5 * SUSE Linux Enterprise Server for SAP Applications 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP7

Topics%20covered

Topics Covered

security advisory buffer overflow important out-of-bounds OpenSUSE dnsmasq

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