Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.
From VID-25EFE05C-7FFC-11EA-B594-3065EC8FD3EC:
Google Chrome Releases reports:
[1067851] Critical CVE-2020-6457: Use after free in speech
recognizer. Reported by Leecraso and Guang Gong of Alpha Lab, Qihoo
360 on 2020-04-04
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