As per the  Issue 715035  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 is saying the image is 14178x18788, so the location the image is being copied out to will be a 1 gig itself, nevermind the inflate cost.

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

Detailed report: https://clusterfuzz.com/testcase?key=5050626114584576

Fuzzer: libFuzzer_pdf_codec_gif_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

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

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=511211:511238
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=512243:512265

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5050626114584576

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.