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SUSE dnsmasq Important Buffer Overflow Out-of-Bounds Read Vuln 2026-22706-1

suse
Calendar Grey July 22, 2026
Scroller Suse
Two vulnerabilities in dnsmasq fixed with a security update in SUSE Linux Micro. Critical installation recommended.
A new dnsmasq update addresses two vulnerabilities in SUSE Linux Micro 6.0, fixing issues related to buffer overflow and out-of-bounds reads while also improving DNSSEC handling.

Summary

## 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. ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important out-of-bounds read dnsmasq

References

* bsc#1268764

* bsc#1268882

Cross-

* CVE-2026-12725

* CVE-2026-12969

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-2026-12969 ( SUSE ): 6.9

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

* CVE-2026-12969 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

* CVE-2026-12969 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Products:

* SUSE Linux Micro 6.0

An update that solves two vulnerabilities can now be installed.

##

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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:22706-1
Release Date: 2026-07-10T08:06:26Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important out-of-bounds read dnsmasq

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