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Issue metadata

Status: Fixed
Owner:
Last visit 15 days ago
Closed: Jun 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Undefined-shift in WebRtcIlbcfix_EnhancerInterface

Project Member Reported by ClusterFuzz, May 23 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5450451406815232

Fuzzer: libfuzzer_audio_decoder_ilbc_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  WebRtcIlbcfix_EnhancerInterface
  WebRtcIlbcfix_DecodeImpl
  WebRtcIlbcfix_Decode
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=386932:386961

Minimized Testcase (0.04 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95pROeExe0ncZgnF4-Kw4gEf1pUK3sLIGTgF39sbfFytiN7VLRqpdoGo-1RJi4FIjQaQqAzM6p8JVqh9GVh-2SuBjs-JYW2YwnDJWG9b-UzOUSQ_8GUBmaLDMWgtHYQqKU5GHQ2O_ykenjIww1-SbUaaRkBVQ

Filer: mmoroz

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

Comment 1 by mmoroz@chromium.org, May 23 2016

Cc: mmoroz@chromium.org kcc@chromium.org pbos@chromium.org aizatsky@chromium.org
Owner: kwiberg@chromium.org

Comment 2 by mmoroz@chromium.org, May 23 2016

Components: Blink>WebRTC>Audio
Project Member

Comment 3 by ClusterFuzz, Jun 9 2016

ClusterFuzz has detected this issue as fixed in range 396407:396452.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5450451406815232

Fuzzer: libfuzzer_audio_decoder_ilbc_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  WebRtcIlbcfix_EnhancerInterface
  WebRtcIlbcfix_DecodeImpl
  WebRtcIlbcfix_Decode
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=386932:386961
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=396407:396452

Minimized Testcase (0.04 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97tb7-F58lqP07y8wM18lBKLnre-8Jt6L5HUONE14IWp26ySJNuEXkmSOxY08AFQc_sJuULJDkOUoSiWGtYTDavIOnE1bdYBtUHImhwuBD6Jq393M8vChUIj7i-AhcjGB0jt0ZsIXf2rbvO-MhLFkoM28mq8g

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

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
Status: Fixed (was: Available)
That this bug has been fixed sounds legit---the line where we left shifted a negative value now does a multiplication instead. (Because another fuzzer bug was failing on the same thing, no doubt.)
Project Member

Comment 5 by sheriffbot@chromium.org, Nov 22 2016

Labels: -Restrict-View-EditIssue
Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

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