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.

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(Security Sheriff Triage)
Seems to be related to https://codereview.chromium.org/2981083002

Quite possibly a duplicate of https://bugs.chromium.org/p/chromium/issues/detail?id=748464

Fixed in https://chromium.googlesource.com/chromium/src/+/ba05045c920078d04b7135144dd14c649bc73727

ClusterFuzz has detected this issue as fixed in range 489286:489347.

Detailed report: https://clusterfuzz.com/testcase?key=4557598350376960

Fuzzer: ifratric_acrojs
Job Type: windows_syzyasan_chrome
Platform Id: windows

Crash Type: Heap-use-after-free READ 1
Crash Address: 0x39c7ab18
Crash State:
  ui::AXPlatformNodeWin::Destroy
  views::View::~View
  views::DialogDelegateView::~DialogDelegateView
  
Memory Tool: SYZYASAN

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=windows_syzyasan_chrome&range=489104:489186
Fixed: https://clusterfuzz.com/revisions?job=windows_syzyasan_chrome&range=489286:489347

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4557598350376960


Additional requirements: Requires Gestures

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 4557598350376960 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