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

Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.

Automatically assigning owner based on suspected regression changelist https://pdfium.googlesource.com/pdfium/+/c5a729ec5ada8ef0edc3f4d9976e96865f516598 (Revert cleanup of IsHyphen and reimplement).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.

ClusterFuzz has detected this issue as fixed in range 514858:514905.

Detailed report: https://clusterfuzz.com/testcase?key=5273194163601408

Fuzzer: libFuzzer_pdfium_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  FXSYS_iswalpha
  CPDF_TextPage::IsHyphen
  CPDF_TextPage::ProcessInsertObject
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=514627:514666
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=514858:514905

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5273194163601408

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