hong_zhang another one for you to look at please. Thanks!

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

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

Most likely a dupe of  bug 616667  as well.

ClusterFuzz has detected this issue as fixed in range 400134:400227.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4727572818821120

Fuzzer: libfuzzer_pdf_codec_png_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  bmp_read_header
  CCodec_BmpModule::ReadHeader
  CCodec_ProgressiveDecoder::DetectImageType
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=398256:398314
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=400134:400227

Minimized Testcase (0.01 Kb): https://cluster-fuzz.appspot.com/download/AMIfv9762OAJn53kI1XCVaVIDwjaX5kHTwHAwiQNZqNMSd4DaaPHjoagOXy2Awz4tsba6PvGMO2auGdID-KAaZmLX9wPyWvY_0NZH9ea93Ob1ga4h3ds_svLjuHsYL-Nxm0mVoPFB0SWmKo1wA0VoN4G8vqEHxuvog?testcase_id=4727572818821120

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.

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