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Starred by 2 users

Issue metadata

Status: Verified
Owner:
Closed: Jan 2018
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in media::SourceBufferStream<media::SourceBufferRangeByPts>::RangeSplitRange

Project Member Reported by ClusterFuzz, Jan 28 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4759146021519360

Fuzzer: libFuzzer_mediasource_MP4_AACLC_AVC_pipeline_integration_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000001
Crash State:
  media::SourceBufferStream<media::SourceBufferRangeByPts>::RangeSplitRange
  media::SourceBufferStream<media::SourceBufferRangeByPts>::PrepareRangesForNextAp
  media::SourceBufferStream<media::SourceBufferRangeByPts>::Append
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=521953:521990

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4759146021519360

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jan 28 2018

Labels: Test-Predator-Auto-Owner
Owner: wolenetz@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/c4c936cf14b8c7f125a6087241b7b7983644ee49 (MSE: Signal SBS of new CFG more granularly when buffering ByPts).

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 2 by ClusterFuzz, Jan 28 2018

Components: Internals>Media
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 3 by ClusterFuzz, Jan 29 2018

ClusterFuzz has detected this issue as fixed in range 532267:532325.

Detailed report: https://clusterfuzz.com/testcase?key=4759146021519360

Fuzzer: libFuzzer_mediasource_MP4_AACLC_AVC_pipeline_integration_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000001
Crash State:
  media::SourceBufferStream<media::SourceBufferRangeByPts>::RangeSplitRange
  media::SourceBufferStream<media::SourceBufferRangeByPts>::PrepareRangesForNextAp
  media::SourceBufferStream<media::SourceBufferRangeByPts>::Append
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=521953:521990
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=532267:532325

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4759146021519360

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, Jan 29 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 4759146021519360 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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