Google has pushed the latest Chrome update today, this update was cross-platform which also improved miscellaneous features such as tab sync. Google had paid security researchers more than 7,500 under its “Bugs Bounty” program for identifying many vulenerbailities estingushed in the Chrome 19 update.
Many of the high risk exploits have been patched by the new version of Chrome tackle either “out-of-bounds write” or “use-after-free” memory vulnerabilities.
You can find a full list of vulnerabilities addressed in Chrome 19 which is detailed in the Google’s advisory here.