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

ClusterFuzz has detected this issue as fixed in range 490999:491077.

Detailed report: https://clusterfuzz.com/testcase?key=5995388581707776

Fuzzer: afl_paint_op_buffer_fuzzer
Job Type: afl_chrome_asan
Platform Id: linux

Crash Type: Heap-buffer-overflow READ 4
Crash Address: 0x6310000000a4
Crash State:
  maskFormat
  GrAtlasTextBlob::flushRun
  GrAtlasTextBlob::flushThrowaway
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=489460:489535
Fixed: https://clusterfuzz.com/revisions?job=afl_chrome_asan&range=490999:491077

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5995388581707776


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.

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