As per the  Issue 754432  owner, assigning this issue to @rharrison.
@rharrison-- Could you please look into this issue, kindly reassign if it has nothing to do with your changes.
Thanks.

The header indicates this image is 50207x4318, which requires about a gig for the raster buffer alone, nevermind the incidental memory usage during inflation.

ClusterFuzz has detected this issue as fixed in range 512243:512265.

Detailed report: https://clusterfuzz.com/testcase?key=4763855627747328

Fuzzer: libFuzzer_pdf_codec_jpeg_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

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

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=398314:399191
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=512243:512265

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4763855627747328

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.