Multiple unspecified vulnerabilities in Google Chrome before 17.0.963.60 on the Acer AC700, Samsung Series 5, and Cr-48 Chromebook platforms have unknown impact and attack vectors.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2012-1443
http://googlechromereleases.blogspot.com/2012/02/stable-channel-update-for-chromebooks_24.html