- Google Chrome OS before R12 0.12.433.38 Beta allows local users to gain privileges by creating a /var/lib/chromeos-aliases.conf file and placing commands in it. - Google Chrome OS before R12 0.12.433.38 Beta, when Guest mode is enabled, does not prevent changes on the about:flags page, which has unspecified impact and local attack vectors. - Unspecified vulnerability in the dbugs package in Google Chrome OS before R12 0.12.433.38 Beta has unknown impact and attack vectors.
uhm .. just noticed this is about Chrome OS, not Chrome itself. Should be checked anyway.
We don't ship any of that code in Gentoo. Thank you for checking though, and feel free to ask me if you have more questions.