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Issue metadata

Status: Verified
Owner:
Closed: Oct 2017
Cc:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 3
Type: Bug-Security



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Use-of-uninitialized-value in GrCCPRCoverageOpsBuilder::parsePath

Project Member Reported by ClusterFuzz, Oct 8 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5107502185447424

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  GrCCPRCoverageOpsBuilder::parsePath
  GrCoverageCountingPathRenderer::setupPerFlushResources
  GrCoverageCountingPathRenderer::preFlush
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=507290:507291

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5107502185447424

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Oct 8 2017

Labels: Test-Predator-AutoOwner
Owner: csmartdalton@google.com
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://skia.googlesource.com/skia/+/196efbf71cdd9a64b807e5e869cd45da5a66ac36 (Enable coverage counting path rendering except on Android framework).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.
Labels: -Security_Impact-Head Security_Impact-None Pri-3
Project Member

Comment 3 by ClusterFuzz, Oct 11 2017

ClusterFuzz has detected this issue as fixed in range 507653:507703.

Detailed report: https://clusterfuzz.com/testcase?key=5107502185447424

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  GrCCPRCoverageOpsBuilder::parsePath
  GrCoverageCountingPathRenderer::setupPerFlushResources
  GrCoverageCountingPathRenderer::preFlush
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=507290:507291
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=507653:507703

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5107502185447424

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 4 by ClusterFuzz, Oct 11 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5107502185447424 is verified as fixed, so closing issue as verified.

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

Comment 5 by sheriffbot@chromium.org, Oct 11 2017

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Labels: -Test-Predator-AutoOwner Test-Predator-Auto-Owner

Comment 7 by mmoroz@google.com, Nov 27 2017

Cc: enne@chromium.org
Project Member

Comment 8 by sheriffbot@chromium.org, Jan 17 2018

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

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