A new security update has been released for Gentoo Linux - Valgrind: Untrusted search path. Here the announcement:

Gentoo Linux Security Advisory GLSA 200902-03
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http://security.gentoo.org/
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Severity: High
Title: Valgrind: Untrusted search path
Date: February 12, 2009
Bugs: #245317
ID: 200902-03

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Synopsis
========

An untrusted search path vulnerability in Valgrind might result in the
execution of arbitrary code.

Background
==========

Valgrind is an open-source memory debugger.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-util/valgrind < 3.4.0 >= 3.4.0

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

Tavis Ormandy reported that Valgrind loads a .valgrindrc file in the
current working directory, executing commands specified there.

Impact
======

A local attacker could prepare a specially crafted .valgrindrc file and
entice a user to run Valgrind from the directory containing that file,
resulting in the execution of arbitrary code with the privileges of the
user running Valgrind.

Workaround
==========

Do not run "valgrind" from untrusted working directories.

Resolution
==========

All Valgrind users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-util/valgrind-3.4.0"

References
==========

[ 1 ] CVE-2008-4865
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4865

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

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

http://security.gentoo.org/glsa/glsa-200902-03.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