Stable Channel Update

The Chrome team is delighted to announce the promotion of Chrome 38 to the stable channel for Windows, Mac and Linux. Chrome 38.0.2125.101 contains a number of fixes and improvements, including:

- A number of new apps/extension APIs
- Lots of under the hood changes for stability and performance

A full list of changes is available in the log.

Security Fixes and Rewards

_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 159 security fixes, including 113 relatively minor fixes found using MemorySanitizer. Below, we highlight fixes that were either contributed by external researchers or particularly interesting. Please see the Chromium security page for more information.

[$27633.70][416449] Critical CVE-2014-3188: A special thanks to Jüri Aedla for a combination of V8 and IPC bugs that can lead to remote code execution outside of the sandbox.
[$3000][398384] High CVE-2014-3189: Out-of-bounds read in PDFium. Credit to cloudfuzzer.
[$3000][400476] High CVE-2014-3190: Use-after-free in Events. Credit to cloudfuzzer, Chen Zhang (demi6od) of NSFOCUS Security Team.
[$3000][402407] High CVE-2014-3191: Use-after-free in Rendering. Credit to cloudfuzzer.
[$2000][403276] High CVE-2014-3192: Use-after-free in DOM. Credit to cloudfuzzer.
[$1500][399655] High CVE-2014-3193: Type confusion in Session Management. Credit to miaubiz.
[$1500][401115] High CVE-2014-3194: Use-after-free in Web Workers. Credit to Collin Payne.
[$4500][403409] Medium CVE-2014-3195: Information Leak in V8. Credit to Jüri Aedla.
[$3000][338538] Medium CVE-2014-3196: Permissions bypass in Windows Sandbox. Credit to James Forshaw.
[$1500][396544] Medium CVE-2014-3197: Information Leak in XSS Auditor. Credit to Takeshi Terada.
[$1500][415307] Medium CVE-2014-3198: Out-of-bounds read in PDFium. Credit to Atte Kettunen of OUSPG.
[$500][395411] Low CVE-2014-3199: Release Assert in V8 bindings. Credit to Collin Payne.

We would also like to thank Atte Kettunen of OUSPG and Collin Payne for working with us during the development cycle to prevent security bugs from ever reaching the stable channel. $23,000 in additional rewards were issued.

As usual, our ongoing internal security work responsible for a wide range of fixes:
[420899] CVE-2014-3200: Various fixes from internal audits, fuzzing and other initiatives (Chrome 38).
Multiple vulnerabilities in V8 fixed at the tip of the 3.28 branch (currently 3.28.71.15).

Some of the above bugs were also detected using AddressSanitizer.

Interested in switching release channels? Find out how. If you find a new issue, please let us know by filing a bug.

Matthew Yuan
Google Chrome