Multiple integer overflows in X.org libGLX in Mesa 9.1.1 and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to the (1) XF86DRIOpenConnection and (2) XF86DRIGetClientDriverName functions.
http://www.x.org/wiki/Development/Security/Advisory-2013-05-23
http://www.ubuntu.com/usn/USN-1888-1
http://www.openwall.com/lists/oss-security/2013/05/23/3
http://www.mandriva.com/security/advisories?name=MDVSA-2013:181
http://www.debian.org/security/2013/dsa-2678
http://rhn.redhat.com/errata/RHSA-2013-0898.html
http://rhn.redhat.com/errata/RHSA-2013-0897.html
http://lists.opensuse.org/opensuse-updates/2013-06/msg00007.html
http://lists.freedesktop.org/archives/mesa-dev/2013-May/039722.html
http://lists.freedesktop.org/archives/mesa-dev/2013-May/039720.html