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Issue metadata

Status: Verified
Owner: ----
Closed: Dec 2016
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Stack-buffer-overflow in SkOpEdgeBuilder::walk

Project Member Reported by ClusterFuzz, Dec 16 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4570102122151936

Fuzzer: libfuzzer_skia_pathop_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Stack-buffer-overflow WRITE 8
Crash Address: 0x7f32774a0348
Crash State:
  SkOpEdgeBuilder::walk
  SkOpEdgeBuilder::finish
  OpDebug
  
Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=438537:438652

Minimized Testcase (0.08 Kb): https://cluster-fuzz.appspot.com/download/AMIfv9767zetEHS_aCGVUG5ao1zPm5cnGwgcU7IR4o4pqBk4IV9ySRiQSQyC2fi_BbIzTX3J97HPPf7E3QaC-2CKoQBWObjDP61Ak3bp5YvEa312Z7QnIrisX8pgFINAJsVckRIYC8FNwRJOdk4rGW1RJijMgFEIFQ?testcase_id=4570102122151936

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Project Member

Comment 1 by ClusterFuzz, Dec 17 2016

ClusterFuzz has detected this issue as fixed in range 439277:439328.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4570102122151936

Fuzzer: libfuzzer_skia_pathop_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Stack-buffer-overflow WRITE 8
Crash Address: 0x7f32774a0348
Crash State:
  SkOpEdgeBuilder::walk
  SkOpEdgeBuilder::finish
  OpDebug
  
Recommended Security Severity: High

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=438537:438652
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=439277:439328

Minimized Testcase (0.08 Kb): https://cluster-fuzz.appspot.com/download/AMIfv9767zetEHS_aCGVUG5ao1zPm5cnGwgcU7IR4o4pqBk4IV9ySRiQSQyC2fi_BbIzTX3J97HPPf7E3QaC-2CKoQBWObjDP61Ak3bp5YvEa312Z7QnIrisX8pgFINAJsVckRIYC8FNwRJOdk4rGW1RJijMgFEIFQ?testcase_id=4570102122151936

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 2 by ClusterFuzz, Dec 17 2016

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 4570102122151936 is verified as fixed, so closing issue.

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

Comment 3 by sheriffbot@chromium.org, Dec 17 2016

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Project Member

Comment 4 by sheriffbot@chromium.org, Mar 25 2017

Labels: -Restrict-View-SecurityNotify allpublic
This bug has been closed for more than 14 weeks. Removing security view restrictions.

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

Comment 5 by sheriffbot@chromium.org, Jul 28

Labels: Pri-1

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