Use-after-free vulnerability in the RenderFrameImpl::OnMessageReceived function in content/renderer/render_frame_impl.cc in Google Chrome before 42.0.2311.90 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors that trigger renderer IPC messages during a detach operation.
https://security.gentoo.org/glsa/201506-04
https://codereview.chromium.org/1007123003
https://code.google.com/p/chromium/issues/detail?id=461191
http://www.securitytracker.com/id/1032209
http://www.debian.org/security/2015/dsa-3238
http://ubuntu.com/usn/usn-2570-1
http://rhn.redhat.com/errata/RHSA-2015-0816.html
http://lists.opensuse.org/opensuse-updates/2015-11/msg00024.html
http://lists.opensuse.org/opensuse-updates/2015-04/msg00040.html
http://googlechromereleases.blogspot.com/2015/04/stable-channel-update_14.html