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 2 security fixes. Below, we highlight fixes that were contributed by external researchers. Please see the Chrome Security Page for more information.
[$TBD][1196781] High CVE-2021-21206: Use after free in Blink. Reported by Anonymous on 2021-04-07
[$N/A][1196683] High CVE-2021-21220: Insufficient validation of untrusted input in V8 for x86_64. Reported by Bruno Keith (@bkth_) & Niklas Baumstark (@_niklasb) of Dataflow Security (@dfsec_it) via ZDI (ZDI-CAN-13569) on 2021-04-07
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.
Google is aware of reports that exploits for CVE-2021-21206 and CVE-2021-21220 exist in the wild.
Many of our security bugs are detected using AddressSanitizer, MemorySanitizer, UndefinedBehaviorSanitizer, Control Flow Integrity, libFuzzer, or AFL.
Prudhvikumar Bommana
Google Chrome
