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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