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

No suspected changelists within the regression range. :(

Maybe https://chromium.googlesource.com/chromium/src/+/fc79b0926b78c20eb703729caa3ce01f45a2feda but seems unlikely.  dmazzoni, can you rule out your CL here?  Thanks.

 Issue 754207  has been merged into this issue.

ClusterFuzz has detected this issue as fixed in range 493415:493447.

Detailed report: https://clusterfuzz.com/testcase?key=6056192014286848

Fuzzer: inferno_twister
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Use-after-poison READ 8
Crash Address: 0x7ebf67246e30
Crash State:
  blink::EventListenerMap::Add
  blink::EventTarget::AddEventListenerInternal
  blink::EventTarget::addEventListener
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=491565:491643
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=493415:493447

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6056192014286848

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 6056192014286848 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