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/+/1324be868df000cb2e070199ce2d10cd0c5a2706 (Make NextWordPosition() to utilize TextOffsetMapping).

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.

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

M67 Stable promotion is coming soon. Your bug is labelled as Stable ReleaseBlock, pls make sure to land the fix and request a merge into the release branch ASAP. Thank you.

Change ReleaseBlock to M68 because the patch caused by this bug is reverted on M67 branch http://crrev.com/c/1013445

http://crrev.com/c/1018923 should fix this issue.

ClusterFuzz has detected this issue as fixed in range 557408:557410.

Detailed report: https://clusterfuzz.com/testcase?key=6584967514292224

Fuzzer: bj_broddelwerk
Job Type: linux_msan_content_shell_drt
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x00560000007d
Crash State:
  blink::LayoutObject::NextInPreOrder
  blink::TextOffsetMapping::TextOffsetMapping
  blink::TextOffsetMapping::TextOffsetMapping
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_content_shell_drt&range=550102:550107
Fixed: https://clusterfuzz.com/revisions?job=linux_msan_content_shell_drt&range=557408:557410

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6584967514292224

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.

ClusterFuzz testcase 6584967514292224 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