The PointerCompare function in codegen.cc in Seccomp-BPF, 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 merge blocks, which might allow remote attackers to bypass intended sandbox restrictions by leveraging renderer access.
https://src.chromium.org/viewvc/chrome?revision=260157&view=revision
https://code.google.com/p/chromium/issues/detail?id=351103
http://www.debian.org/security/2014/dsa-2920
http://security.gentoo.org/glsa/glsa-201408-16.xml
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