Predator did not provide any possible suspects.
Assigning to the concern owner from CL --
https://chromium.googlesource.com/chromium/src/+log/8dc3d806aabc4c0314e8f685e496e5784e6f0b38..f14baaad1cd718887df89f507548abd8e4c9d5b2?pretty=fuller

Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/833190ec3fb8c4dd2d66e1b5b2ed3cf34a70f609

@morlovich -- 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 476461:476516.

Detailed report: https://clusterfuzz.com/testcase?key=4782259122208768

Fuzzer: libFuzzer_net_spdy_session_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  net::SpdyStream::AdjustSendWindowSize
  net::SpdySession::UpdateStreamsSendWindowSize
  net::SpdySession::HandleSetting
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=449628:449664
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=476461:476516

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4782259122208768


See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md 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 4782259122208768 is verified as fixed, so closing issue.

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