The ContainerNode::parserInsertBefore function in core/dom/ContainerNode.cpp in Blink, as used in Google Chrome before 46.0.2490.71, proceeds with a DOM tree insertion in certain cases where a parent node no longer contains a child node, which allows remote attackers to bypass the Same Origin Policy via crafted JavaScript code.
googlechromereleases.blogspot.com/2015/10/stable-channel-update.html
rhn.redhat.com/errata/RHSA-2015-1912.html
www.debian.org/security/2015/dsa-3376
www.securityfocus.com/bid/77071
www.securitytracker.com/id/1033816
www.ubuntu.com/usn/USN-2770-1
www.ubuntu.com/usn/USN-2770-2
code.google.com/p/chromium/issues/detail?id=519558
security.gentoo.org/glsa/201603-09
src.chromium.org/viewvc/blink?revision=200690&view=revision