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EulerOS Virtualization 2.15.0 : dnsmasq (EulerOS-SA-2026-4811)

medium Nessus Plugin ID 377203

Synopsis

The remote EulerOS Virtualization host is missing a security update.

Description

According to the versions of the dnsmasq package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

 An out-of-bounds read vulnerability exists in dnsmasq's find_soa() function in src/rfc1035.c. When parsing NS section records, extract_name() is called with extrabytes=0, failing to validate that 10 additional bytes exist for fixed-length DNS record fields. A remote attacker controlling a DNS zone can exploit this via a crafted NXDOMAIN response to cause a 10-byte heap out-of-bounds read, potentially accessing stale data from prior transactions.(CVE-2026-12969)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization dnsmasq security advisory.

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

Solution

Update the affected dnsmasq packages.

See Also

http://www.nessus.org/u?05b7f3b9

Plugin Details

Severity: Medium

ID: 377203

File Name: EulerOS_SA-2026-4811.nasl

Version: 1.1

Type: Local

Published: 11/7/2026

Updated: 11/7/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

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: cpe:/o:huawei:euleros:uvp:2.15.0, p-cpe:/a:huawei:euleros:dnsmasq

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/6/2026

Vulnerability Publication Date: 6/23/2026

Reference Information

CVE: CVE-2026-12969

IAVA: 2026-A-0668