The PPB_Flash_MessageLoop_Impl::InternalRun function in content/renderer/pepper/ppb_flash_message_loop_impl.cc in the Pepper plugin in Google Chrome before 49.0.2623.75 mishandles nested message loops, which allows remote attackers to bypass the Same Origin Policy via a crafted web site.
googlechromereleases.blogspot.com/2016/03/stable-channel-update.html
lists.opensuse.org/opensuse-security-announce/2016-03/msg00014.html
lists.opensuse.org/opensuse-security-announce/2016-03/msg00015.html
lists.opensuse.org/opensuse-security-announce/2016-03/msg00018.html
lists.opensuse.org/opensuse-security-announce/2016-03/msg00028.html
www.debian.org/security/2016/dsa-3507
www.securityfocus.com/bid/84008
www.securitytracker.com/id/1035185
www.ubuntu.com/usn/USN-2920-1
code.google.com/p/chromium/issues/detail?id=569496
codereview.chromium.org/1559113002/
security.gentoo.org/glsa/201603-09