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[gentoo-announce] [ GLSA 202608-04 ] Dnsmasq: Multiple Vulnerabilities

Posted on 14 August 2026
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 202608-04
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https://security.gentoo.org/
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Severity: High
Title: Dnsmasq: Multiple Vulnerabilities
Date: August 13, 2026
Bugs: #974690
ID: 202608-04

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Synopsis
========
Multiple vulnerabilities have been found in Dnsmasq, one of which
includes remote code execution.

Background
==========
Dnsmasq is a lightweight and easily-configurable DNS forwarder and DHCP
server.

Affected packages
=================
Package Vulnerable Unaffected
--------------- ------------ ------------
net-dns/dnsmasq < 2.92_p2 >= 2.92_p2

Description
===========
Multiple vulnerabilities have been discovered in Dnsmasq. Please review
the CVE identifiers referenced below for details.

Impact
======
Please review the referenced CVE identifiers for details.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All Dnsmasq users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/dnsmasq-2.92_p2"

References
==========
[ 1 ] CVE-2026-2291
https://nvd.nist.gov/vuln/detail/CVE-2026-2291
[ 2 ] CVE-2026-4890
https://nvd.nist.gov/vuln/detail/CVE-2026-4890
[ 3 ] CVE-2026-4891
https://nvd.nist.gov/vuln/detail/CVE-2026-4891
[ 4 ] CVE-2026-4892
https://nvd.nist.gov/vuln/detail/CVE-2026-4892
[ 5 ] CVE-2026-4893
https://nvd.nist.gov/vuln/detail/CVE-2026-4893
[ 6 ] CVE-2026-5172
https://nvd.nist.gov/vuln/detail/CVE-2026-5172

Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202608-04

Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======
Copyright 2026 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5
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