WebKit/Source/bindings/templates/interface.cpp in Blink, as used in Google Chrome before 53.0.2785.113, does not prevent certain constructor calls, which allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted JavaScript code.
https://security.gentoo.org/glsa/201610-09
https://googlechromereleases.blogspot.com/2016/09/stable-channel-update-for-desktop_13.html
https://codereview.chromium.org/2306023002
http://www.securitytracker.com/id/1036826
http://www.securityfocus.com/bid/92942