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Gentoo Linux Security Advisory                           GLSA 202008-06
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: iproute2: Denial of service
     Date: August 08, 2020
     Bugs: #722144
       ID: 202008-06

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Synopsis
=======
A use-after-free was found in iproute2, possibly allowing a Denial of
Service condition.

Background
=========
iproute2 is a set of tools for managing Linux network routing and
advanced features.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  sys-apps/iproute2            < 5.1.0                    >= 5.1.0

Description
==========
iproute2 was found to contain a use-after-free in get_netnsid_from_name
in ip/ipnetns.c.

Impact
=====
A remote attacker, able to feed iproute2 crafted data, may be able to
cause a Denial of Service condition.

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

Resolution
=========
All iproute2 users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=sys-apps/iproute2-5.1.0"

References
=========
[ 1 ] CVE-2019-20795
      https://nvd.nist.gov/vuln/detail/CVE-2019-20795

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

 https://security.gentoo.org/glsa/202008-06

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 2020 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/