Unable to find actual suspect through code search and also observing no CL's under regression range, hence adding appropriate label and requesting someone from Dev team to look in to this issue.

Thanks!

ClusterFuzz has detected this issue as fixed in range 597152:597153.

Detailed report: https://clusterfuzz.com/testcase?key=4545771435982848

Fuzzer: libFuzzer_v8_multi_return_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x0000000000bf
Crash State:
  NULL
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=596732:596755
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=597152:597153

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4545771435982848

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase 4545771435982848 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.