OSV-2020-305 Stack-buffer-overflow in ot::NetworkData::Leader::SendCommissioningGetResponse

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17297 Crash type: Stack-buffer-overflow READ 1 Crash state: ot::NetworkData::Leader::SendCommissioningGetResponse ot::NetworkData::Leader::HandleCommissioningGet ot::Coap::CoapBase::ProcessReceivedRequest...