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

 Issue 752942  has been merged into this issue.

Guessing that this is the skia roll that is within range.

ClusterFuzz has detected this issue as fixed in range 493087:493142.

Detailed report: https://clusterfuzz.com/testcase?key=6031276439240704

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 4
Crash Address: 0x6140000003f8
Crash State:
  SkFindAndPlaceGlyph::ArbitraryPositions::nextPoint
  void SkFindAndPlaceGlyph::ProcessPosText<GrTextUtils::DrawBmpPosText
  GrTextUtils::DrawBmpPosText
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=491830:491916
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=493087:493142

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6031276439240704

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 6031276439240704 is verified as fixed, so closing issue as verified.

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