Predator and CL did not provide any possible suspects.
Using Code Search for the file, "svglayoutsupport.cpp" assigning to concern owner.
Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/635b0f1103edf9c832afd19e93ee3ec8d2f622df

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

ClusterFuzz has detected this issue as fixed in range 449874:449877.

Detailed report: https://clusterfuzz.com/testcase?key=6303843664265216

Fuzzer: miaubiz_svg_fuzzer
Job Type: windows_syzyasan_chrome
Platform Id: windows

Crash Type: UNKNOWN
Crash Address: 0x00000003
Crash State:
  blink::computeTransformToSVGRoot
  blink::SVGLayoutSupport::mapToVisualRectInAncestorSpace
  blink::slowMapToVisualRectInAncestorSpace<blink::FloatRect>
  
Memory Tool: SYZYASAN

Regressed: https://clusterfuzz.com/revisions?job=windows_syzyasan_chrome&range=449612:449627
Fixed: https://clusterfuzz.com/revisions?job=windows_syzyasan_chrome&range=449874:449877

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv95rqWzZqqEbkVedG749xoUCguR4Wg9lINhIMlDdSrDIcr6knfxA8hEo7o_pI9V3wzGufkEfDlnG1QrwFjk3uKLYhRQ0KZ9amG1ZfiZaWKVg02_ydHrfxuY1FZlixzfxwUyugqd4i7oTI-TVqlBTNKTAoUhwcQUxrlDdkPm9kRtO39QtKLyfxQCLPL7wWccFFN7AtI-ChxNvlSj4Gqz30b5hBshCoVHOc_EEIKCHw8tDKbK9nU7KNOs5lVJNhMZZ4tSvChvrGQ7zygNAq_HH3CZ9nh_usIhNJ59Q4Iuy2LHa5YYUzcNfbzQ59SHwgu43v-XOGqhJRkqdzzA8nyWwpegE5d1LraCrj8AjUGsX2qAgiFvew9Hb_rVv6B4ldyO9siODefgFFOlleZ3VZOVr6oa_455yBg?testcase_id=6303843664265216


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 says it's fixed. I'm not going to argue with ClusterFuzz.