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Gentoo Linux Security Advisory                           GLSA 200904-18
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  Severity: High
     Title: udev: Multiple vulnerabilities
      Date: April 18, 2009
      Bugs: #266290
        ID: 200904-18

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Synopsis
========

Two errors in udev allow for a local root compromise and a Denial of
Service.

Background
==========

udev is the device manager used in the Linux 2.6 kernel series.

Affected packages
=================

    -------------------------------------------------------------------
     Package      /  Vulnerable  /                          Unaffected
    -------------------------------------------------------------------
  1  sys-fs/udev      < 124-r2                               >= 124-r2

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

Sebastian Krahmer of SUSE discovered the following two vulnerabilities:

* udev does not verify the origin of NETLINK messages properly
  (CVE-2009-1185).

* A buffer overflow exists in the util_path_encode() function in
  lib/libudev-util.c (CVE-2009-1186).

Impact
======

A local attacker could gain root privileges by sending specially
crafted NETLINK messages to udev or cause a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All udev users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=sys-fs/udev-124-r2"

References
==========

  [ 1 ] CVE-2009-1185
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1185
  [ 2 ] CVE-2009-1186
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1186

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

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

  http://security.gentoo.org/glsa/glsa-200904-18.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
http://bugs.gentoo.org.

License
=======

Copyright 2009 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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