Alerts This Week
Warning Icon 1 485
Alerts This Week
Warning Icon 1 485

SUSE dnsmasq Important Buffer Overflow Threat Advisory 2026-22496-1

suse
Calendar Grey July 6, 2026
Dist Suse Esm H88
Critical security update for dnsmasq addresses three vulnerabilities affecting SUSE systems to enhance overall protection.
An update that solves three vulnerabilities can now be installed.

Summary

## 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:

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important dnsmasq DNS query

References

* bsc#1268764

Cross-

* 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

Severity
important
Lowest
Low
Medium
High
Critical

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

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important dnsmasq DNS query

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here