drott: This looks like freetype. Do you want to help triage and work with upstream, or should I ask someone else?

Werner, are you aware of this issue? Was this filed on a FreeType specific tracker already?

Yes, cf. https://savannah.nongnu.org/bugs/?48979

All such overflows are completely harmless.

ClusterFuzz has detected this issue as fixed in range 478471:478501.

Detailed report: https://clusterfuzz.com/testcase?key=5361877273280512

Fuzzer: libFuzzer_pdf_font_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  cf2_doStems
  cf2_interpT2CharString
  cf2_getGlyphOutline
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=472859:472915
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=478471:478501

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5361877273280512


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 5361877273280512 is verified as fixed, so closing issue.

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