Predator did not provide any possible suspects.
Assigning to the concern owner from CL --
https://chromium.googlesource.com/chromium/src/+log/6d7056407d29413588771b164e82a76f819783c8..1ca5bbe347115d2ce3c3a6a26525d4bc4ca54223?pretty=fuller

@Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/8c14bf7d37bec879a5caa162f2c72a303da1a6e0

@enne -- 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 486202:486227.

Detailed report: https://clusterfuzz.com/testcase?key=4568729974472704

Fuzzer: inferno_twister_c
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  gfx::ScaleToEnclosingRect
  ScaleToEnclosingRect
  cc::PaintedScrollbarLayerImpl::AppendQuads
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=422899:423265
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=486202:486227

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4568729974472704


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 4568729974472704 is verified as fixed, so closing issue.

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