From chromereleases.googleblog.com
The stable channel has been updated to 71.0.3578.98 for Windows, Mac, and Linux, which will roll out over the coming days/weeks.
Security Fixes and Rewards
We would also like to thank all security researchers that worked with us during the development cycle to prevent security bugs from ever reaching the stable channel.
Note: Access to bug details and links may be kept restricted until a majority of users are updated with a fix. We will also retain restrictions if the bug exists in a third party library that other projects similarly depend on, but haven’t yet fixed.
This update includes 1 security fix contributed by external researchers. Please see the Chrome Security Page for more information.
[$6000][901654] High CVE-2018-17481: Use after free in PDFium. Reported by Anonymous on 2018-11-04
(This issue was first addressed in the initial Stable release of Chrome 70, but received additional fixes in this release)
A list of all changes is available in the log. Interested in switching release channels? Find out how. If you find a new issue, please let us know by filing a bug. The community help forum is also a great place to reach out for help or learn about common issues.