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To: gentoo-announce@g.o
From: Sean Amoss <ackle@g.o>
Subject: [ GLSA 201206-19 ] NVIDIA Drivers: Privilege escalation
Date: Sat, 23 Jun 2012 10:43:06 -0400
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Gentoo Linux Security Advisory                           GLSA 201206-19
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                                            http://security.gentoo.org/
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 Severity: High
    Title: NVIDIA Drivers: Privilege escalation
     Date: June 23, 2012
     Bugs: #411617
       ID: 201206-19

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Synopsis
========

A vulnerability in NVIDIA drivers may allow a local attacker to gain
escalated privileges.

Background
==========

The NVIDIA drivers provide X11 and GLX support for NVIDIA graphic
boards.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  x11-drivers/nvidia-drivers
                                  < 295.40                  >= 295.40

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

A vulnerability has been found in the way NVIDIA drivers handle
read/write access to GPU device nodes, allowing access to arbitrary
system memory locations.

NOTE: Exposure to this vulnerability is reduced in Gentoo due to 660
permissions being used on the GPU device nodes by default.

Impact
======

A local attacker could gain escalated privileges.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All NVIDIA driver users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot -v ">=x11-drivers/nvidia-drivers-295.40"

References
==========

[ 1 ] CVE-2012-0946
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0946

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

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

 http://security.gentoo.org/glsa/glsa-201206-19.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@g.o or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2012 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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Updated Jun 25, 2012

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