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Issue metadata

Status: Verified
Owner:
Closed: Jan 10
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug

Blocked on:
issue 916298



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Integer-overflow in avformat_find_stream_info

Project Member Reported by ClusterFuzz, Dec 25

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4842197438169088

Fuzzer: libFuzzer_audio_decoder_fuzzer
Fuzz target binary: audio_decoder_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  avformat_find_stream_info
  media::AudioFileReader::OpenDemuxer
  media::AudioFileReader::Open
  
Sanitizer: undefined (UBSAN)

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

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4842197438169088

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.
 
Project Member

Comment 1 by ClusterFuzz, Dec 25

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, Dec 25

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, Dec 25

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.
Cc: -mmoroz@chromium.org
Owner: chcunningham@chromium.org
Blockedon: 916298
Project Member

Comment 6 by ClusterFuzz, Jan 10

ClusterFuzz has detected this issue as fixed in range 621448:621462.

Detailed report: https://clusterfuzz.com/testcase?key=4842197438169088

Fuzzer: libFuzzer_audio_decoder_fuzzer
Fuzz target binary: audio_decoder_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  avformat_find_stream_info
  media::AudioFileReader::OpenDemuxer
  media::AudioFileReader::Open
  
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=621448:621462

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4842197438169088

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
Project Member

Comment 7 by ClusterFuzz, Jan 10

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 4842197438169088 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
> ClusterFuzz has detected this issue as fixed in range 621448:621462.

Fixed by the roll (621454)
https://chromium-review.googlesource.com/c/chromium/src/+/1401445

Comment 9 Deleted

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