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Issue metadata

Status: Verified
Owner:
Last visit > 30 days ago
Closed: Sep 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Integer-overflow in SkOpSegment::updateOppWinding

Project Member Reported by ClusterFuzz, Sep 7 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5377977116524544

Fuzzer: libfuzzer_skia_pathop_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkOpSegment::updateOppWinding
  SkOpSegment::activeOp
  bridgeOp
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=415770:415865

Minimized Testcase (0.44 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95-IfBqLcoLjaG6GHzgMRV3AXsi_vZaNqMpJNhHE4xlQxAwinbFhxl_78QP5L59cZrTrQJsb_8I7QSgrpje7GMy2azRSbpL_7_t6WDfMopEDVMu7iW2DPiXOSo_do_JIyxY3fyH8K_otS5le4G8SjFgSwVRNg?testcase_id=5377977116524544

Issue manually filed by: mmoroz

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Cc: mmoroz@chromium.org kcc@chromium.org aizatsky@chromium.org
Components: Internals>Skia
Owner: caryclark@chromium.org
The result is a list of CLs that change the crashed files.

Author: caryclark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/30b9fdd6a1d607bde20c793af65b5e2e8a1737ca
Time: Wed Aug 31 21:36:29 2016
File SkOpSegment.cpp is changed in this cl (and is part of stack frame #0, "SkOpSegment::updateOppWinding"; frame #1, "SkOpSegment::activeOp")
Minimum distance from crash line to modified line: 22. (file: SkOpSegment.cpp, crashed on: 1715, modified: 1693).

Project Member

Comment 2 by ClusterFuzz, Sep 7 2016

ClusterFuzz has detected this issue as fixed in range 416628:416688.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5377977116524544

Fuzzer: libfuzzer_skia_pathop_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkOpSegment::updateOppWinding
  SkOpSegment::activeOp
  bridgeOp
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=415770:415865
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=416628:416688

Minimized Testcase (0.44 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95-IfBqLcoLjaG6GHzgMRV3AXsi_vZaNqMpJNhHE4xlQxAwinbFhxl_78QP5L59cZrTrQJsb_8I7QSgrpje7GMy2azRSbpL_7_t6WDfMopEDVMu7iW2DPiXOSo_do_JIyxY3fyH8K_otS5le4G8SjFgSwVRNg?testcase_id=5377977116524544

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.
Project Member

Comment 3 by ClusterFuzz, Sep 7 2016

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase is verified as fixed, closing issue.

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

Comment 4 by sheriffbot@chromium.org, Nov 22 2016

Labels: -Restrict-View-EditIssue
Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

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