Predator and CL did not find any possible suspects.
Using Code Search for the file, "pdfium_fuzzer" assigning to the concern owner.
Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/034ca9381180401b9b25eac088babf7fdae847d8

@dsinclair -- Could you please look into the issue, kindly re-assign if this is not related to your changes.
Thank You.

ClusterFuzz has detected this issue as fixed in range 462742:462744.

Detailed report: https://clusterfuzz.com/testcase?key=6399049122185216

Fuzzer: libfuzzer_pdfium_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Out-of-memory (exceeds 2048 MB)
Crash Address: 
Crash State:
  pdfium_fuzzer
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=462700:462742
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=462742:462744

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv94sBU04-a8b8jPfWc54RMDmsMIAXOWXPOYdbcMxQ2hyWJ5zIYZtI7mcX7G3s_md5Wnp6dqJRY2z_d8XpJdspdYjB4pWOf-SmS2JyckKJR0qcheILgtUe_zZuycQofPJLTlijVqlQ8KnLvz4r4RQFe9cRfW-dwwmvrSCeLZ5Xfu0dEZa8kiO9xRaG46oVxwWitU3-RKCQ7yNcKONe1y9PeAWJUukO4lj0E6_xlR70c3LNYirVRI4xbHTr10A01uyAhRubrjMKy6ppIRPK9FBAokbn2-35HMqPZeLH76DP5zEEd3zdxVuOdaaQpT-l_8Uz83fd44RN5xPtOrtbzt5XmJR75MRBm0FiIo4Ex61fJw9HicH9cA?testcase_id=6399049122185216


See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.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 6399049122185216 is verified as fixed, so closing issue.

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

Don't see anything that w ould have fixed this.

Bulk-WontFixing these bugs. This was a bug on ClusterFuzz side, see bug 717534. We will start seeing new testcases auto-filed in a day or two. We can't leave these open as ClusterFuzz won't autoverify them after ClusterFuzz-Wrong label.

We have made a bunch of changes on ClusterFuzz side, so resetting ClusterFuzz-Wrong label.