From findit tool:

Author: kwiberg
Project: chromium-webrtc
Changelist: https://chromium.googlesource.com/external/webrtc/trunk/webrtc.git/+/e6e55c788e20cf9fc991b97460a28f7b97111498
Time: Wed Aug 24 09:46:44 2016
The CL last changed line 164 of file decode_residual.c, which is stack frame 1.

Author: kwiberg
Project: chromium-webrtc
Changelist: https://chromium.googlesource.com/external/webrtc/trunk/webrtc.git/+/e6e55c788e20cf9fc991b97460a28f7b97111498
Time: Wed Aug 24 09:46:44 2016
The CL last changed line 107 of file decode.c, which is stack frame 2.

Author: kwiberg
Project: chromium-webrtc
Changelist: https://chromium.googlesource.com/external/webrtc/trunk/webrtc.git/+/e6e55c788e20cf9fc991b97460a28f7b97111498
Time: Wed Aug 24 09:46:44 2016
The CL last changed line 184 of file ilbc.c, which is stack frame 3.

kwiberg@, could you please take a look and please help us to find correct owner if it is not related your changes.

Lowering prio to 3, since iLBC is only used in tests.

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

For more information, please see https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md.

The link referenced in the description is no longer valid.

(bulk edit)

ClusterFuzz has detected this issue as fixed in range 551565:551569.

Detailed report: https://clusterfuzz.com/testcase?key=4719790369538048

Fuzzer: libFuzzer_audio_decoder_ilbc_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  WebRtcIlbcfix_CbConstruct
  WebRtcIlbcfix_DecodeResidual
  WebRtcIlbcfix_DecodeImpl
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=398351:399229
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=551565:551569

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4719790369538048

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.

ClusterFuzz testcase 4719790369538048 is verified as fixed, so closing issue as verified.

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