New issue
Advanced search Search tips

Issue 832828 link

Starred by 1 user

Issue metadata

Status: Verified
Owner:
Closed: Apr 2018
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



Sign in to add a comment

Integer-overflow in SkQuadraticEdge::setQuadraticWithoutUpdate

Project Member Reported by ClusterFuzz, Apr 13 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6117001970581504

Fuzzer: libFuzzer_skia_path_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkQuadraticEdge::setQuadraticWithoutUpdate
  SkAnalyticQuadraticEdge::setQuadratic
  SkScan::DAAFillPath
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=529706:529715

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6117001970581504

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 13 2018

Components: Internals>Skia
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.
Project Member

Comment 2 by ClusterFuzz, Apr 13 2018

Labels: Test-Predator-Auto-Owner
Owner: reed@google.com
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://skia.googlesource.com/skia/+/23e0cf29639459fb8695bf8174d82ae47fd0d0bb (relax path bounds check).

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.
Project Member

Comment 3 by ClusterFuzz, Apr 14 2018

ClusterFuzz has detected this issue as fixed in range 550720:550740.

Detailed report: https://clusterfuzz.com/testcase?key=6117001970581504

Fuzzer: libFuzzer_skia_path_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkQuadraticEdge::setQuadraticWithoutUpdate
  SkAnalyticQuadraticEdge::setQuadratic
  SkScan::DAAFillPath
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=529706:529715
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=550720:550740

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6117001970581504

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.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, Apr 14 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6117001970581504 is verified as fixed, so closing issue as verified.

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

Sign in to add a comment