Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.
Chrome Releases reports:
This release contains 10 security fixes, including:
 High CVE-2021-21149: Stack overflow in Data Transfer.
Reported by Ryoya Tsukasaki on 2020-10-14
 High CVE-2021-21150: Use after free in Downloads.
Reported by Woojin Oh(@pwn_expoit) of STEALIEN on 2021-01-29
 High CVE-2021-21151: Use after free in Payments.
Reported by Khalil Zhani on 2021-01-12
 High CVE-2021-21152: Heap buffer overflow in Media.
Reported by Anonymous on 2021-01-14
 High CVE-2021-21153: Stack overflow in GPU Process.
Reported by Jan Ruge of ERNW GmbH on 2020-12-06
 High CVE-2021-21154: Heap buffer overflow in Tab
Strip. Reported by Abdulrahman Alqabandi, Microsoft Browser
Vulnerability Research on 2021-02-01
 High CVE-2021-21155: Heap buffer overflow in Tab
Strip. Reported by Khalil Zhani on 2021-02-07
 High CVE-2021-21156: Heap buffer overflow in V8.
Reported by Sergei Glazunov of Google Project Zero on
 Medium CVE-2021-21157: Use after free in Web
Sockets. Reported by Anonymous on 2021-01-26