64-bit support for Mac
A number of new apps/extension APIs
Lots of under the hood changes for stability and performance
A partial 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 42 security fixes. Below, we highlight fixes that were either contributed by external researchers or particularly interesting. Please see the Chromium security page for more information.
[$500] High CVE-2014-7899: Address bar spoofing. Credit to Eli Grey.
[$1500] High CVE-2014-7900: Use-after-free in pdfium. Credit to Atte Kettunen from OUSPG.
[$1000] High CVE-2014-7901: Integer overflow in pdfium. Credit to cloudfuzzer.
[$1000] High CVE-2014-7902: Use-after-free in pdfium. Credit to cloudfuzzer.
[$3000] High CVE-2014-7903: Buffer overflow in pdfium. Credit to cloudfuzzer.
[$2000] High CVE-2014-7904: Buffer overflow in Skia. Credit to Atte Kettunen from OUSPG.
[$2000] High CVE-2014-7905: Flaw allowing navigation to intents that do not have the BROWSABLE category. Credit to WangTao(neobyte) of Baidu X-Team.
[$500] High CVE-2014-7906: Use-after-free in pepper plugins. Credit to Chen Zhang (demi6od) of the NSFOCUS Security Team.
[$7500] High CVE-2014-0574: Double-free in Flash. Credit to biloulehibou.
[$5000] High CVE-2014-7907: Use-after-free in blink. Credit to Chen Zhang (demi6od) of the NSFOCUS Security Team.
[$500] High CVE-2014-7908: Integer overflow in media. Credit to Christoph Diehl.
[$500] Medium CVE-2014-7909: Uninitialized memory read in Skia. Credit to miaubiz.
We would also like to thank Atte Kettunen, Christian Holler, cloudfuzzer, and mmaliszkiewicz for working with us during the development cycle to prevent security bugs from ever reaching the stable channel. $16500 in additional rewards were issued.
As usual, our ongoing internal security work was responsible for a wide range of fixes:
 CVE-2014-7910: Various fixes from internal audits, fuzzing and other initiatives.
Many of the above bugs were detected using AddressSanitizer or MemorySanitizer.
Interested in switching release channels? Find out how. If you find a new issue, please let us know by filing a bug.