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 493422:493447.

Detailed report: https://clusterfuzz.com/testcase?key=6459909679087616

Fuzzer: inferno_twister
Job Type: mac_asan_content_shell
Platform Id: mac

Crash Type: Use-after-poison READ 8
Crash Address: 0x7edbb18af898
Crash State:
  blink::AddListenerToVector
  blink::EventListenerMap::Add
  blink::EventTarget::AddEventListenerInternal
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=491565:491628
Fixed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=493422:493447

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6459909679087616

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.

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