core/html/HTMLSelectElement.cpp in the DOM implementation in Blink, as used in Google Chrome before 34.0.1847.131 on Windows and OS X and before 34.0.1847.132 on Linux, does not properly check renderer state upon a focus event, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors that leverage "type confusion" for SELECT elements.
https://support.apple.com/kb/HT6537
https://src.chromium.org/viewvc/blink?revision=171216&view=revision
https://code.google.com/p/chromium/issues/detail?id=349903
http://www.securityfocus.com/bid/67572
http://www.debian.org/security/2014/dsa-2920
http://support.apple.com/kb/HT6254
http://security.gentoo.org/glsa/glsa-201408-16.xml
http://secunia.com/advisories/60372
http://secunia.com/advisories/58301
http://lists.opensuse.org/opensuse-updates/2014-05/msg00050.html
http://lists.opensuse.org/opensuse-updates/2014-05/msg00049.html
http://googlechromereleases.blogspot.com/2014/04/stable-channel-update_24.html
http://archives.neohapsis.com/archives/bugtraq/2014-06/0175.html
http://archives.neohapsis.com/archives/bugtraq/2014-06/0174.html
http://archives.neohapsis.com/archives/bugtraq/2014-05/0128.html