Assigning to the concern owner from find it results --
The result is a list of CLs that change the crashed files. 

Author: kcwu
Project: chromium-pdfium
Changelist: https://pdfium.googlesource.com/pdfium.git/+/39ee9dfac1c6d286a4075c7e2435fe1cfe365bad
Time: Thu Sep 22 18:26:22 2016 -0700
File cmsopt.c is changed in this cl (and is part of stack frame #4, "XFormSampler16"; frame #6, "OptimizeByResampling")
Minimum distance from crash line to modified line: 29. (file: cmsopt.c, crashed on: 644, modified: 615).

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

this one is similar to  issue 649847  and  issue 649832 .
reassign to dsinclair

ClusterFuzz has detected this issue as fixed in range 452123:452182.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6457374664818688

Fuzzer: libfuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  Eval4Inputs
  Eval5Inputs
  EvaluateCLUTfloatIn16
  
Sanitizer: undefined (UBSAN)

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=420535:420584
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=452123:452182

Reproducer Testcase: https://cluster-fuzz.appspot.com/download/AMIfv94jHr0V3_j3413t3kjR72Iso5YbZeTJlxOlgh83msSlcnzGR3cQylWfbwB8aaK_i5r-xBIYr3iVeidKheAtdOFwQPDB8YRpWsaExM3xuQm6J09qSiKUHIxMDZDwbWfBgtYAXRSQ62xIHcL1Y0kTqks2OmLwM9VrRvVnIrwF0o66AUkECOdInIWr0icexdoxc8_46Z-8lQrWfTixwI2KxE7uELbzAdffZNt0WsJF45R9Z4ZOuOZfVQ4eJyZ4XQrn_8dKiYaplwRVrcISiy71vhuGO0cYoMGqKLmfwxbfRy7-JRersJqYBmNDt7VHsdnqwNGjtJeGt_aAY0WmoXRtXMueYbPNHt__8G7v1soe1XVBDdHVRnc?testcase_id=6457374664818688


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 6457374664818688 is verified as fixed, so closing issue.

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