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.

ClusterFuzz has detected this issue as fixed in range 583266:583305.

Detailed report: https://clusterfuzz.com/testcase?key=4997242981974016

Fuzzer: libFuzzer_pdfium_fuzzer
Job Type: mac_libfuzzer_chrome_asan
Platform Id: mac

Crash Type: Stack-overflow
Crash Address: 0x7fff51c31f68
Crash State:
  approximateMonotonicCube
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_libfuzzer_chrome_asan&range=513206:513315
Fixed: https://clusterfuzz.com/revisions?job=mac_libfuzzer_chrome_asan&range=583266:583305

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4997242981974016

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 4997242981974016 is verified as fixed, so closing issue as verified.

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