Predator and CL could not provide any possible suspects.
Using Code Search for the file, "navigator_impl.cc" assigning to the concern owner.

Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/6cbfad5930cd6c7b762318f72572d2472252f395

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

The CL was actually by clamy@ and Gerrit misattributed it :(.

ClusterFuzz has detected this issue as fixed in range 501271:501306.

Detailed report: https://clusterfuzz.com/testcase?key=5818463460524032

Fuzzer: ipc_fuzzer_mut
Job Type: linux_asan_chrome_ipc
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  0 in navigator_impl.cc
  content::NavigatorImpl::CheckWebUIRendererDoesNotDisplayNormalURL
  content::NavigatorImpl::NavigateToEntry
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_ipc&range=488146:488166
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_ipc&range=501271:501306

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5818463460524032

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 5818463460524032 is verified as fixed, so closing issue as verified.

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