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://chromium.googlesource.com/chromium/src/+/2a689544e6e070aa2d65841ae1bdb25b41cf7489 (Avoid crash in LayoutText::LocalSelectionRect()).

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 507925:507931.

Detailed report: https://clusterfuzz.com/testcase?key=6613508174381056

Fuzzer: bj_broddelwerk
Job Type: linux_msan_content_shell_drt
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  void blink::InlineTextBoxPainter::PaintSelection<
  blink::InlineTextBoxPainter::Paint
  blink::InlineTextBox::Paint
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_content_shell_drt&range=500520:500531
Fixed: https://clusterfuzz.com/revisions?job=linux_msan_content_shell_drt&range=507925:507931

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6613508174381056

See https://github.com/google/clusterfuzz-tools for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

Both regressed and fixed in M63, removing ReleaseBlock-Stable

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