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Issue metadata

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



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Integer-overflow in SkImageFilter::CropRect::applyTo

Project Member Reported by ClusterFuzz, Mar 11 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6749472034652160

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkImageFilter::CropRect::applyTo
  SkImageFilter::applyCropRect
  SkBlurImageFilterImpl::onFilterImage
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=533116:533139

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6749472034652160

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Mar 11 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, Mar 11 2018

Cc: jvanverth@google.com mtklein@chromium.org
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

Revert "Reduce the amount of padding needed for SDFs, take 2" by jvanverth@google.com - https://skia.googlesource.com/skia/+/825d4d798aed471ceff48fcb03667b268bc15a83

1010102, 101010x, 888x in sw by mtklein@chromium.org - https://skia.googlesource.com/skia/+/ac568a934f8f82bf3a359b757d67eb3a797d3593

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.
Project Member

Comment 3 by ClusterFuzz, May 3 2018

ClusterFuzz has detected this issue as fixed in range 555640:555648.

Detailed report: https://clusterfuzz.com/testcase?key=6749472034652160

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkImageFilter::CropRect::applyTo
  SkImageFilter::applyCropRect
  SkBlurImageFilterImpl::onFilterImage
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=533116:533139
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=555640:555648

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6749472034652160

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, May 3 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 6749472034652160 is verified as fixed, so closing issue as verified.

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

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