This issue is a security regression. If you are not able to fix this quickly, please revert the change that introduced it.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

ClusterFuzz has detected this issue as fixed in range 447848:447948.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5900909428342784

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_cfi_chrome
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0x000000000000
Crash State:
  Bad-cast to blink::BasePage from invalid vptr
  blink::HTMLFrameElementBase::didNotifySubtreeInsertionsToDocument
  blink::ContainerNode::insertNodeVector<>
  
Sanitizer: cfi (CFI)

Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_cfi_chrome&range=447243:447310
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_cfi_chrome&range=447848:447948

Reproducer Testcase: https://cluster-fuzz.appspot.com/download/AMIfv97kRKlAyXgNHjlkz8WMlFTxJyItPGhQ-fPZ6tfOMGluu9FFPPThMgIMSpVV9aNQP--l1x954X0llbQr4Jj0JF3v4RfxiMifu4kEcZ5Pthry22b3AkdvkTHtxP8tOPY5HT123e7abNjoYFaSm2Fl_cGqIpllF8Pacy2aY6nGWbtfzGfvp1_HCiJzybI_caZB6QpmoQ4R34O6XTZY5pbVN5uFo7YrOGlFrZH8icHdKngLUfwL7ClOzvMVBsPTBKNdSq_KYKKgqBAVyuQR05Pd4wMqrYtfcnxZuUx3uo4FlX2DitSLpVAOkqW_VEymkSF54unwHqc0I9E_-FSAHBThnSnwyFuBhjLqkvAgWUm0CiK6Yqsfv5o?testcase_id=5900909428342784


See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs 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 5900909428342784 is verified as fixed, so closing issue.

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