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Gentoo Linux Security Advisory                           GLSA 201412-42
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: Xen: Denial of Service
     Date: December 26, 2014
     Bugs: #523524, #524200
       ID: 201412-42

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Synopsis
========

Multiple vulnerabilities have been found in Xen, possibly resulting in
Denial of Service.

Background
==========

Xen is a bare-metal hypervisor.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-emulation/xen           < 4.4.1-r2              *>= 4.2.5-r1
                                                          >= 4.4.1-r2

Description
===========

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

Impact
======

A local user could possibly cause a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Xen 4.2 users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-emulation/xen-4.2.5-r1"

All Xen 4.4 users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-emulation/xen-4.4.1-r2"

References
==========

[ 1 ] CVE-2014-7154
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7154
[ 2 ] CVE-2014-7155
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7155
[ 3 ] CVE-2014-7156
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7156
[ 4 ] CVE-2014-7188
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7188

Availability
============

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

 http://security.gentoo.org/glsa/glsa-201412-42.xml

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 2014 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.

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


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