Predator and CL could not provide any possible suspects.
Using Code Search for the file, "ImageResourceContent.cpp" assigning to the concern owner who might be related.

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

Reproduced locally on Linux (with chrome, not with content_shell).

Bisecting. r498620 and r478140 are also crashing so this isn't a recent regression?

ClusterFuzz has detected this issue as fixed in range 501602:501627.

Detailed report: https://clusterfuzz.com/testcase?key=6098284740608000

Fuzzer: inferno_twister
Job Type: windows_asan_chrome
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x00000010
Crash State:
  blink::ImageResourceContent::ImageSize
  blink::CachedImageSize
  blink::ImageDocumentParser::Finish
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_chrome&range=498620:498663
Fixed: https://clusterfuzz.com/revisions?job=windows_asan_chrome&range=501602:501627

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6098284740608000

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 6098284740608000 is verified as fixed, so closing issue as verified.

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