rharrison, could you please take a look?

This is a serious security regression. If you are not able to fix this quickly, please revert the change that introduced it.

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

XFA only

The patch for  crbug.com/811733  fixes this.

ClusterFuzz has detected this issue as fixed in range 536816:536853.

Detailed report: https://clusterfuzz.com/testcase?key=5688487924465664

Fuzzer: libFuzzer_pdf_codec_bmp_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0x0000032b30f2
Crash State:
  Bad-cast to CCodec_ProgressiveDecoder from invalid vptr
  CCodec_ProgressiveDecoder::BmpDetectImageType
  CCodec_ProgressiveDecoder::LoadImageInfo
  
Sanitizer: undefined (UBSAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=536273:536275
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=536816:536853

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5688487924465664

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.

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot