The Chrome Instant feature in Google Chrome before 48.0.2564.109 does not ensure that a New Tab Page (NTP) navigation target is on the most-visited or suggestions list, which allows remote attackers to bypass intended restrictions via unspecified vectors, related to instant_service.cc and search_tab_helper.cc.
http://googlechromereleases.blogspot.com/2016/02/stable-channel-update_9.html
http://lists.opensuse.org/opensuse-updates/2016-02/msg00104.html
http://lists.opensuse.org/opensuse-updates/2016-02/msg00119.html
http://rhn.redhat.com/errata/RHSA-2016-0241.html
https://code.google.com/p/chromium/issues/detail?id=509313
https://codereview.chromium.org/1669723002
https://security.gentoo.org/glsa/201603-09