Race condition in the GetStaticInstance function in the WebRTC implementation in Mozilla Firefox before 45.0 might allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via unspecified vectors.
https://security.gentoo.org/glsa/201605-06
https://bugzilla.mozilla.org/show_bug.cgi?id=1219339
http://www.ubuntu.com/usn/USN-2917-3
http://www.ubuntu.com/usn/USN-2917-2
http://www.ubuntu.com/usn/USN-2917-1
http://www.securitytracker.com/id/1035215
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.mozilla.org/security/announce/2016/mfsa2016-33.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00031.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00029.html