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Issue metadata

Status: Assigned
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: 2018-10-26
OS: Linux
Pri: 2
Type: Bug



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Integer-overflow in ff_configure_buffers_for_index

Project Member Reported by ClusterFuzz, Oct 15

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5912738508046336

Fuzzer: libFuzzer_audio_decoder_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  ff_configure_buffers_for_index
  mov_read_header
  avformat_open_input
  
Sanitizer: undefined (UBSAN)

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

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5912738508046336

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Oct 15

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, Oct 15

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, Oct 15

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.
Owner: chcunningham@chromium.org
NextAction: 2018-10-26
The NextAction date has arrived: 2018-10-26
Project Member

Comment 7 by ClusterFuzz, Dec 1

Labels: -Reproducible Unreproducible
ClusterFuzz testcase 5912738508046336 appears to be flaky, updating reproducibility label.
Project Member

Comment 8 by ClusterFuzz, Dec 1

Status: WontFix (was: Assigned)
ClusterFuzz testcase 5912738508046336 is flaky and no longer crashes, so closing issue.

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

Comment 9 by ClusterFuzz, Dec 8

Labels: Needs-Feedback
ClusterFuzz testcase 5912738508046336 is still reproducing on tip-of-tree build (trunk).

If this testcase was not reproducible locally or unworkable, ignore this notification and we will file another bug soon with hopefully a better and workable testcase.

Otherwise, if this is not intended to be fixed (e.g. this is an intentional crash), please add ClusterFuzz-Ignore label to prevent future bug filing with similar crash stacktrace.
Labels: -Needs-Feedback -Unreproducible Reproducible
Status: Assigned (was: WontFix)
Sorry for those confusing messages.
Project Member

Comment 11 by ClusterFuzz, Dec 12

ClusterFuzz has detected this issue as fixed in range 615699:615711.

Detailed report: https://clusterfuzz.com/testcase?key=5912738508046336

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:
  ff_configure_buffers_for_index
  mov_read_header
  avformat_open_input
  
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=615699:615711

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5912738508046336

See https://github.com/google/clusterfuzz-tools 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 12 by ClusterFuzz, Dec 12

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5912738508046336 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
Status: Assigned (was: Verified)
Project Member

Comment 14 by ClusterFuzz, Dec 18

ClusterFuzz has detected this issue as fixed in range 617278:617284.

Detailed report: https://clusterfuzz.com/testcase?key=5912738508046336

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:
  ff_configure_buffers_for_index
  mov_read_header
  avformat_open_input
  
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=617278:617284

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5912738508046336

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.

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