Google Chrome before 25.0.1364.99 on Mac OS X does not properly implement signal handling for Native Client (aka NaCl) code, which has unspecified impact and attack vectors.
https://code.google.com/p/chromium/issues/detail?id=171569
http://lists.opensuse.org/opensuse-updates/2013-03/msg00045.html
http://googlechromereleases.blogspot.com/2013/02/stable-channel-update_21.html