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

dsinclair@, would you mind helping to find an owner?

dsinclair: Uh oh! This issue still open and hasn't been updated in the last 14 days. This is a serious vulnerability, and we want to ensure that there's progress. Could you please leave an update with the current status and any potential blockers?

If you're not the right owner for this issue, could you please remove yourself as soon as possible or help us find the right one?

If the issue is fixed or you can't reproduce it, please close the bug. If you've started working on a fix, please set the status to Started.

Thanks for your time! To disable nags, add the Disable-Nags label.

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

This is part of XFA which is disabled in all branches of Chrome.

ClusterFuzz has detected this issue as fixed in range 453271:453317.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5817620218773504

Fuzzer: libfuzzer_pdf_codec_bmp_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0x000009510680
Crash State:
  Bad-cast to CFX_DIBitmap from invalid vptr
  _start
  
Sanitizer: undefined (UBSAN)

Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=434175:434379
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=453271:453317

Reproducer Testcase: https://cluster-fuzz.appspot.com/download/AMIfv966v_4Rj-8nCM8YZRxxMBiNIHVJPCbIhbUk85iEGhn6DoDtw_pG9mSj_FpfVUqg49Gz9Pxu4U0Vav1K5brq53p0PIJns8Aqh3f4IedFPVgugEhwAzEyIfe4oOMlP55xtuddsQFQcIGGzez9e7RkBwz8wmeoPBhxMZf9Rj4XayxD5TgpWo0vMeVwptd0SQShvSEymhtaEeykajCa2Es_MtrfMvMGF4hPmusPhcHzhlrR3rWsluLTfoQ4PVhRAqW03YGQn6MwbOjf10ICyILwsfGFZUUgc8Xq7hmzOgAbgSLOqK4pqpGsbp6M81TsTumtCem65dcXfldU5oR0XJO1ct3XUnmvJ6SWSJblWsMA5ZqR_8Bx3F4?testcase_id=5817620218773504


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.

https://pdfium.googlesource.com/pdfium/+/73c9f3bb3d82563d6d4496c4b0204d5c0825e8a2 "fixed" this.

ClusterFuzz testcase 5817620218773504 is verified as fixed, so closing issue.

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

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