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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0694
                        kfreebsd-8 security update
                               23 July 2012

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           kfreebsd-8
Publisher:         Debian
Operating System:  Debian GNU/Linux 6
Impact/Access:     Root Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-0217  

Reference:         ESB-2012.0541
                   ESB-2012.0538
                   ESB-2012.0554.2
                   ESB-2012.0546.2

Original Bulletin: 
   http://www.debian.org/security/2012/dsa-2508

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Debian Security Advisory DSA-2508-1                   security@debian.org
http://www.debian.org/security/                         Yves-Alexis Perez
July 22, 2012                          http://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : kfreebsd-8
Vulnerability  : privilege escalation
Problem type   : local
Debian-specific: no
CVE ID         : CVE-2012-0217
Debian Bug     : 677297

Rafal Wojtczuk from Bromium discovered that FreeBSD wasn't handling correctly
uncanonical return addresses on Intel amd64 CPUs, allowing privilege escalation
to kernel for local users.

For the stable distribution (squeeze), this problem has been fixed in
version 8.1+dfsg-8+squeeze3.

For the testing distribution (wheezy), this problem has been fixed in
version 8.3-4.

For the unstable distribution (sid), this problem has been fixed in
version 8.3-4.

We recommend that you upgrade your kfreebsd-8 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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===========================================================================
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