Multiple unspecified vulnerabilities in Google V8 before 4.6.85.23, as used in Google Chrome before 46.0.2490.71, allow attackers to cause a denial of service or possibly have other impact via unknown vectors.
http://www.ubuntu.com/usn/USN-2770-2
http://www.ubuntu.com/usn/USN-2770-1
http://googlechromereleases.blogspot.com/2015/10/stable-channel-update.html