Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A flaw was found in DPDK lib/vhost. Runt RX descriptors underflow the copy length in vhost enqueue on both split and packed rings. Unsigned subtraction underflow allows a full packet copy past a tiny descriptor window, which can crash a host vswitch such as OVS-DPDK.