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

Issue is upstream; unclear if this path can be reached in pdfium, in which case this might be severity none.  Keeping at high out of an abundance of caution.

This is XFA only code so not enabled on any Chrome branch.

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

dsinclair: Uh oh! This issue still open and hasn't been updated in the last 28 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

XFA is off by default, so Impact-None for now.

ClusterFuzz has detected this issue as fixed in range 443057:443122.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6198546644860928

Fuzzer: libfuzzer_pdf_codec_tiff_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  TIFFReadDirectoryCheckOrder
  TIFFReadDirectory
  TIFFClientOpen
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=422909:423055
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=443057:443122

Minimized Testcase (0.05 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97wHXCm7CJ0-cBxJqbUCYFFyHJEUkGfVDcbG8zUvpO8QnHdYp_yiHr6E_IKJuQmGRT13lxbwjKiFlWDCDU-nBDihJxk1A8vWtdT3l1kJKP7rtn1eaJkUaJHDF4rDrsP3f5VJd2WbBB29yo11azfThAlPfEn9A?testcase_id=6198546644860928

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.

ClusterFuzz testcase 6198546644860928 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