CVE-2026-86565: Red Hat Fast Datapath For Rhel 10

High severity, CVSS 8.2. EPSS: 0.2% chance of exploitation in the next 30 days.

A flaw was found in DPDK lib/vhost. A guest can desynchronize virtqueue size from inflight descriptor table size, causing an out-of-bounds write in the host vhost process.

Affected products

• Red Hat Fast Datapath For Rhel 10
• Red Hat Fast Datapath For Rhel 8
• Red Hat Fast Datapath For Rhel 9
• Red Hat Red Hat Enterprise Linux 10
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 9
• Red Hat Red Hat Openshift Container Platform 4
• Red Hat Red Hat Openstack Platform 13 Queens

Published 2026-10-14. Last modified 2026-10-15.