A libvirt security update has been released for Gentoo Linux.

GLSA 202101-22 : libvirt: Unintended access to /dev/mapper/control

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Gentoo Linux Security Advisory GLSA 202101-22
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  https://security.gentoo.org/
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Severity: High
Title: libvirt: Unintended access to /dev/mapper/control
Date: January 26, 2021
Bugs: #739948
ID: 202101-22

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Synopsis
=======
A vulnerability in libvirt may allow root privilege escalation.

Background
=========
libvirt is a C toolkit for manipulating virtual machines.

Affected packages
================
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Package / Vulnerable / Unaffected
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1 app-emulation/libvirt < 6.7.0 &rt;= 6.7.0

Description
==========
A file descriptor for /dev/mapper/control was insufficiently protected.

Impact
=====
A local attacker may be able to escalate to root privileges.

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

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

# emerge --sync
# emerge --ask --oneshot --verbose "&rt;=app-emulation/libvirt-6.7.0"

References
=========
[ 1 ] CVE-2020-14339
  https://nvd.nist.gov/vuln/detail/CVE-2020-14339

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

  https://security.gentoo.org/glsa/202101-22

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 2021 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