The WebGL subsystem in Mozilla Firefox before 20.0, Firefox ESR 17.x before 17.0.5, Thunderbird before 17.0.5, Thunderbird ESR 17.x before 17.0.5, and SeaMonkey before 2.17 on Linux does not properly interact with Mesa drivers, which allows remote attackers to execute arbitrary code or cause a denial of service (free of unallocated memory) via unspecified vectors.
lists.opensuse.org/opensuse-security-announce/2013-04/msg00009.html
lists.opensuse.org/opensuse-security-announce/2013-04/msg00010.html
lists.opensuse.org/opensuse-security-announce/2013-04/msg00013.html
lists.opensuse.org/opensuse-security-announce/2013-05/msg00019.html
lists.opensuse.org/opensuse-updates/2013-06/msg00012.html
rhn.redhat.com/errata/RHSA-2013-0696.html
rhn.redhat.com/errata/RHSA-2013-0697.html
www.debian.org/security/2013/dsa-2699
www.mozilla.org/security/announce/2013/mfsa2013-35.html
www.ubuntu.com/usn/USN-1791-1
bugzilla.mozilla.org/show_bug.cgi?id=827106
bugzilla.mozilla.org/show_bug.cgi?id=838413