OSV-2021-52 Stack-buffer-overflow in ot::KeyManager::SetMasterKey

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7766 Crash type: Stack-buffer-overflow READ 16 Crash state: ot::KeyManager::SetMasterKey ot::MeshCoP::Dataset::ApplyConfiguration ot::MeshCoP::DatasetManager::Set...