This might be a suspected 
Changelist: https://chromium.googlesource.com/chromium/src/+/b3a7cd0489e05c4af2fc8cecd51b20b9818a348f

yosin@ could you please look into this. Thanks in advance

Lower to Pri-2 since real world usage of insertImage is low.

ClusterFuzz has detected this issue as fixed in range 417193:417242.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5939999407341568

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_lsan_chrome_mp
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000010
Crash State:
  blink::PositionTemplate<blink::EditingAlgorithm<blink::NodeTraversal> >::lastPos
  blink::PositionTemplate<blink::EditingAlgorithm<blink::NodeTraversal> > blink::l
  blink::lastEditablePositionBeforePositionInRoot
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_lsan_chrome_mp&range=371187:371278
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_lsan_chrome_mp&range=417193:417242

Minimized Testcase (2.54 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97LvjdL31L-z8qnKb_36DprnZsUiUaAK7l19Y24O66BYvwZPeHEN3F9JeoFN2p73eM-1xbKhIP8UY-EB8GiCujURpHzODqNJPBUGDeL_408uSglJlgUElkw0LTPI_kREfWfPMXRdyrS2RvHn4-lCR3QKWiNhg?testcase_id=5939999407341568

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 is verified as fixed, closing issue.

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