The Web workers implementation in Mozilla Firefox before 27.0 and SeaMonkey before 2.24 allows remote attackers to execute arbitrary code via vectors involving termination of a worker process that has performed a cross-thread object-passing operation in conjunction with use of asm.js.
https://security.gentoo.org/glsa/201504-01
https://exchange.xforce.ibmcloud.com/vulnerabilities/90887
https://bugzilla.mozilla.org/show_bug.cgi?id=950604
http://www.ubuntu.com/usn/USN-2102-2
http://www.ubuntu.com/usn/USN-2102-1
http://www.securitytracker.com/id/1029720
http://www.securitytracker.com/id/1029717
http://www.securityfocus.com/bid/65321
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://www.mozilla.org/security/announce/2014/mfsa2014-11.html
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00004.html