SUSE SLES12 Security Update : dnsmasq (SUSE-SU-2026:2974-1)

medium Nessus Plugin ID 326965

Language:

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2974-1 advisory.

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.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected dnsmasq package.

Plugin Details

Severity: Medium

ID: 326965

File Name: suse_SU-2026-2974-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 7/15/2026

Updated: 7/15/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.77

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P

CVSS Score Source: CVE-2026-12969

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:dnsmasq, cpe:/o:novell:suse_linux:12

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/14/2026

Vulnerability Publication Date: 6/22/2026

Reference Information

CVE: CVE-2026-12725, CVE-2026-12969

IAVA: 2026-A-0668

SuSE: SUSE-SU-2026:2974-1

Detections

Analytics