Similar to  bug 603483 , may be a duplicate.

ClusterFuzz has detected this issue as fixed in range 388463:388488.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4762567305592832

Fuzzer: libfuzzer_rtcp_receiver_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  webrtc::RTCPUtility::RTCPParserV2::ParseTMMBNItem
  IterateTMMBNItem
  webrtc::RTCPUtility::RTCPParserV2::Iterate
  
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=388463:388488

Minimized Testcase (0.04 Kb): https://cluster-fuzz.appspot.com/download/AMIfv94lyPUROWF7mZSCYJdb7dA8u2ruHaeblG926_n6q56lCKS8YiAFMieLVY0vizKr4lAgmcZqvfCAHrLGONZ8VZsa6xTZd1G_LE9dtygT3go4hsRpnOrqIUzMMePOIfPFl3RZ_JSWF_OJVA39z-ViBzOGje9T-w

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

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

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