CVE-2020-14378

An integer underflow flaw was found in the move_desc function that can lead to large amounts of CPU cycles being consumed in a long-running loop. This flaw allows an attacker to cause move_desc to get stuck in a 4,294,967,295-count iteration loop. Depending on how vhost_crypto is being used, this issue could prevent other VMs or network tasks from being serviced by the busy DPDK lcore for an extended period. The highest threat from this vulnerability is to system availability.

This flaw does not affect the versions of dpdk as shipped with Red Hat Enterprise Linux 7 and 8 or the versions embedded in Red Hat Virtualization or the Fast Datapath openvswitch package, as they do not enable generic crypto device library support. This causes the vulnerable code in vhost_crypto.c to not be included.

This flaw does not affect Red Hat Ceph Storage 3 and 4 as dpdk (embedded in ceph source rpm) is not built in the packages, therefore the vulnerable code is not available in the resulting RPM and the issue cannot be exploited.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.