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

Author: Mike Reed
Project: chromium-skia
Changelist: https://skia.googlesource.com/skia.git/+/ebfce6d9b42198e04288a15953f40c395a7b6139
Time: Mon Dec 12 10:02:12 2016 -0500
Files SkCanvas.cpp, SkRecordDraw.cpp are changed in this cl (and is part of stack frame #2, "SkCanvas::onDrawRect"; frame #5, "SkCanvas::onDrawPicture"; frame #6, "SkCanvas::drawPicture")
Minimum distance from crash line to modified line: 14. (file: SkRecordDraw.cpp, crashed on: 74, modified: 88).

@Mike Reed -- 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 440242:440280.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5686541038125056

Fuzzer: miaubiz_svg_fuzzer
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Float-cast-overflow
Crash Address: 
Crash State:
  SkScan::HairRect
  SkDraw::drawRect
  SkCanvas::onDrawRect
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=435261:438085
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_chrome&range=440242:440280

Minimized Testcase (2.46 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95-wGI8zQMCGa5QLwW_pxfiGk8JQgTbW-SvU5TlXq5dNnhkzwCxcM2px1kFAKoLynIzSi4DT_zy8-Dmpd3cD_SnPEiQlrOmuJjk9tkLNwCDeT8M2lKAwP145FlSg7N4Ut_wDjz-QIGQOg84zxx7t4-08Vuuow?testcase_id=5686541038125056

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 5686541038125056 is verified as fixed, so closing issue.

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