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Slackware Linux 15.0 / current dnsmasq Vulnerability (SSA:2026-155-01)

high Nessus Plugin ID 319300

Synopsis

The remote Slackware Linux host is missing a security update to dnsmasq.

Description

The version of dnsmasq installed on the remote host is prior to 2.93. It is, therefore, affected by a vulnerability as referenced in the SSA:2026-155-01 advisory.

 New dnsmasq packages are available for Slackware 15.0 and -current to fix a security issue.

Tenable has extracted the preceding description block directly from the 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

Upgrade the affected dnsmasq package.

See Also

http://www.nessus.org/u?6a10441a

Plugin Details

Severity: High

ID: 319300

File Name: Slackware_SSA_2026-155-01.nasl

Version: 1.1

Type: Local

Published: 6/6/2026

Updated: 6/6/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2026-2291

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: p-cpe:/a:slackware:slackware_linux:dnsmasq, cpe:/o:slackware:slackware_linux, cpe:/o:slackware:slackware_linux:15.0

Required KB Items: Host/local_checks_enabled, Host/Slackware/release, Host/Slackware/packages

Exploit Ease: No known exploits are available

Patch Publication Date: 6/4/2026

Vulnerability Publication Date: 5/11/2026

Reference Information

CVE: CVE-2026-2291

IAVA: 2026-A-0450