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Issue 642871 link

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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 SkTAbs<int>

Project Member Reported by ClusterFuzz, Aug 31 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5421796520361984

Fuzzer: libfuzzer_skia_pathop_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkTAbs<int>
  UseInnerWinding
  SkOpSegment::markAngle
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=415587:415619

Minimized Testcase (0.31 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94NnnH9KfMGPJWWfv7ADa5jMJt85DNcsTDVDh1bO4UZSbOzdCfaoTjLWTo1GHNqnRdJEy4cjVDdK76T94aHEDFC9Z-wuzhgqnuZGCru2s-cmVk6BcR7I39Xbm_9RIT6VTefazhSQ5nCjpLZBdiEU9x6P7S9pA?testcase_id=5421796520361984

Issue manually filed by: mummareddy

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Components: Internals>Skia
Labels: findit-wrong M-55 Te-Logged
Owner: caryclark@chromium.org
Status: Assigned (was: Untriaged)

Author: caryclark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/54359294a7c9dc54802d512a5d891a35c1663392
Time: Thu Mar 26 14:52:43 2015
The CL last changed line 163 of file SkPathOpsOp.cpp, which is stack frame 4.

Based on the  issue 641478 , assigning to caryclark@. could you please take a look and reassign if it is not related your changes.
Project Member

Comment 2 by ClusterFuzz, Sep 1 2016

ClusterFuzz has detected this issue as fixed in range 415619:415673.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5421796520361984

Fuzzer: libfuzzer_skia_pathop_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkTAbs<int>
  UseInnerWinding
  SkOpSegment::markAngle
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=415587:415619
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=415619:415673

Minimized Testcase (0.31 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94NnnH9KfMGPJWWfv7ADa5jMJt85DNcsTDVDh1bO4UZSbOzdCfaoTjLWTo1GHNqnRdJEy4cjVDdK76T94aHEDFC9Z-wuzhgqnuZGCru2s-cmVk6BcR7I39Xbm_9RIT6VTefazhSQ5nCjpLZBdiEU9x6P7S9pA?testcase_id=5421796520361984

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 1 2016

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
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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