OSV-2020-164 Stack-buffer-overflow in ot::NetworkData::NetworkData::FindService

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21762 Crash type: Stack-buffer-overflow READ Crash state: ot::NetworkData::NetworkData::FindService ot::NetworkData::Leader::Validate ot::NetworkData::Leader::RegisterNetworkData...