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Issue metadata

Status: Verified
Owner:
Last visit > 30 days ago
Closed: Oct 2
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Integer-overflow in update_stream_timings

Project Member Reported by ClusterFuzz, Jun 17 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6089575194427392

Fuzzer: libFuzzer_audio_decoder_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  update_stream_timings
  fill_all_stream_timings
  estimate_timings
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=546308:546319

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6089575194427392

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jun 17 2018

Components: Internals>Media>FFmpeg
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, Jun 17 2018

Cc: mmoroz@chromium.org
Labels: ClusterFuzz-Auto-CC
Automatically adding ccs based on OWNERS file / target commit history.

If this is incorrect, please add ClusterFuzz-Wrong label.
Project Member

Comment 3 by ClusterFuzz, Jun 17 2018

Labels: Test-Predator-Auto-Owner
Owner: mmoroz@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/4b5068a99a84ff2edb34aa0549afc89aa751ccb4 (Add audio_decoder_fuzzer fuzz target.).

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.

Comment 4 by mmoroz@chromium.org, Jun 18 2018

Cc: -mmoroz@chromium.org liber...@chromium.org wolenetz@chromium.org
Owner: jrumm...@chromium.org
Handing over to //media folks, not sure who exactly would be a good owner. Please help.
Cc: jrumm...@chromium.org
Owner: hubbe@chromium.org
-> hubbe@, the ffmpeg roller for M69.

Comment 6 by hubbe@chromium.org, Jun 20 2018

Doesn't look like a security problem and can wait until I come back from vacation.

FFMpeg patch submitted: https://patchwork.ffmpeg.org/patch/9748/
Project Member

Comment 9 by ClusterFuzz, Oct 2

ClusterFuzz has detected this issue as fixed in range 595652:595666.

Detailed report: https://clusterfuzz.com/testcase?key=6089575194427392

Fuzzer: libFuzzer_audio_decoder_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  update_stream_timings
  fill_all_stream_timings
  estimate_timings
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=546308:546319
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=595652:595666

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6089575194427392

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 10 by ClusterFuzz, Oct 2

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6089575194427392 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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