Assigning to the concern owner from CL --
https://chromium.googlesource.com/chromium/src/+log/994db999829331ea3b982d9c9ec469fde22de21d..1855b444e1246227907fdae45be098f2a1543982?pretty=fuller

Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/e5fbce5b84544a61512d2eaf6e2e743dc22b164b

@pilgrim -- Could you please look into the issue, kindly re-assign if this is not related to your changes.
Thank You.

+yoshi, +yuzus FYI. Noticed the repro cause uses <menu> but not sure if it is important.

ClusterFuzz has detected this issue as fixed in range 474922:474938.

Detailed report: https://clusterfuzz.com/testcase?key=5439772882632704

Fuzzer: ifratric-browserfuzzer-v3
Job Type: mac_asan_chrome
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::Range::CheckExtractPrecondition
  blink::Range::extractContents
  blink::V8Range::extractContentsMethodCallback
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=434769:434830
Fixed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=474922:474938

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5439772882632704


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 5439772882632704 is verified as fixed, so closing issue.

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