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AUSCERT External Security Bulletin Redistribution
Google Chrome Multiple Vulnerabilities
1 October 2021
AusCERT Security Bulletin Summary
Product: Google Chrome
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Denial of Service -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Reduced Security -- Remote with User Interaction
CVE Names: CVE-2021-37976 CVE-2021-37975 CVE-2021-37974
Comment: Google is aware the exploits for CVE-2021-37975 and CVE-2021-37976 exist in the
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Release updates from the Chrome team
Stable Channel Update for Desktop
Thursday, September 30, 2021
The Stable channel has been updated to 94.0.4606.71 for Windows, Mac and Linux
which will roll out over the coming days/weeks. Extended stable channel has
also been updated to 94.0.4606.71 for Windows and Mac which will roll out over
the coming days/weeks
A full list of changes in this build is available in the log. Interested in
switching release channels? Find out how here. 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.
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 4 security fixes. Below, we highlight fixes that were
contributed by external researchers. Please see the Chrome Security Page for
[$20000] High CVE-2021-37974 : Use after free in Safe Browsing.
Reported by Weipeng Jiang (@Krace) from Codesafe Team of Legendsec at Qi'anxin
Group on 2021-09-01
[$TBD] High CVE-2021-37975 : Use after free in V8. Reported by
Anonymous on 2021-09-24
[$NA] Medium CVE-2021-37976 : Information leak in core. Reported by
Clement Lecigne from Google TAG, with technical assistance from Sergei Glazunov
and Mark Brand from Google Project Zero on 2021-09-21
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
Google is aware the exploits for CVE-2021-37975 and CVE-2021-37976 exist in the
As usual, our ongoing internal security work was responsible for a wide range
o  Various fixes from internal audits, fuzzing and other initiatives
Many of our security bugs are detected using AddressSanitizer, MemorySanitizer,
UndefinedBehaviorSanitizer, Control Flow Integrity, libFuzzer, or AFL.
Interested in switching release channels? Find out how here. 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.
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