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 476246:476281.

Detailed report: https://clusterfuzz.com/testcase?key=5606417930387456

Fuzzer: lcamtuf_cross_fuzz
Job Type: linux_cfi_chrome
Platform Id: linux

Crash Type: Bad-cast
Crash Address: 0x000000000000
Crash State:
  Bad-cast to blink::MediaKeySystemConfiguration from invalid vptr
  v8::internal::GlobalHandles::Node::MakeWeak
  blink::ScriptWrappable::SetWrapper
  
Sanitizer: cfi (CFI)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=linux_cfi_chrome&range=474309:475964
Fixed: https://clusterfuzz.com/revisions?job=linux_cfi_chrome&range=476246:476281

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5606417930387456


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 5606417930387456 is verified as fixed, so closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

Seems to be null pointer deref, not a security issue.