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Gentoo Linux Security Advisory 201206-19

Gentoo Linux Security Advisory 201206-19
Posted Jun 23, 2012
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201206-19 - A vulnerability in NVIDIA drivers may allow a local attacker to gain escalated privileges. Versions prior to 295.40 are affected.

tags | advisory, local
systems | linux, gentoo
advisories | CVE-2012-0946
MD5 | 9032b7e5b8959805683b191e7a879f7d

Gentoo Linux Security Advisory 201206-19

Change Mirror Download
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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@gentoo.org 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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