dpdk: librte_vhost VHOST_USER_GET_INFLIGHT_FD message flooding to result in a DoS

A vulnerability was found in DPDK versions 19.11 and above. A malicious container that has direct access to the vhost-user socket can keep sending VHOSTUSERGETINFLIGHTFD messages, causing a resource leak file descriptors and virtual memory, which may result in a denial of service...