The Service Workers subsystem in Google Chrome before 52.0.2743.82 does not properly implement the Secure Contexts specification during decisions about whether to control a subframe, which allows remote attackers to bypass the Same Origin Policy via an https IFRAME element inside an http IFRAME element.
https://security.gentoo.org/glsa/201610-09
https://codereview.chromium.org/2085923002
https://codereview.chromium.org/2082493002/
https://codereview.chromium.org/2071433003
https://codereview.chromium.org/2061203002/
https://codereview.chromium.org/2009453002
http://www.ubuntu.com/usn/USN-3041-1
http://www.securitytracker.com/id/1036428
http://www.securityfocus.com/bid/92053
http://www.debian.org/security/2016/dsa-3637
http://rhn.redhat.com/errata/RHSA-2016-1485.html
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00028.html
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00022.html
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00021.html
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00020.html
http://googlechromereleases.blogspot.com/2016/07/stable-channel-update.html