A new security update has been released for Gentoo Linux - MPlayer: User-assisted execution of arbitrary code. Here the announcement:
"Gentoo Linux Security Advisory GLSA 200805-22
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http://security.gentoo.org/
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Severity: Normal
Title: MPlayer: User-assisted execution of arbitrary code
Date: May 29, 2008
Bugs: #215006
ID: 200805-22

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Synopsis
========

An integer overflow vulnerability in MPlayer may allow for the
execution of arbitrary code.

Background
==========

MPlayer is a media player including support for a wide range of audio
and video formats.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-video/mplayer < 1.0_rc2_p26753 >= 1.0_rc2_p26753

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

k`sOSe reported an integer overflow vulnerability in the
sdpplin_parse() function in the file stream/realrtsp/sdpplin.c, which
can be exploited to overwrite arbitrary memory regions via an overly
large "StreamCount" SDP parameter.

Impact
======

A remote attacker could entice a user to open a specially crafted media
file, possibly resulting in the execution of arbitrary code with the
privileges of the user running MPlayer.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All MPlayer users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=media-video/mplayer-1.0_rc2_p26753"

References
==========

[ 1 ] CVE-2008-1558
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1558

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

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

http://security.gentoo.org/glsa/glsa-200805-22.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 2008 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
"


GLSA 200805-14 Common Data Format library: User-assisted execution of arbitrary code