CVE-2026-86566

A flaw was found in DPDK lib/vhost. A guest with runt RX descriptors can underflow the copy length in vhost enqueue, causing a denial of service in a shared vhost backend such as OVS-DPDK.

Score

CVSS 3.1 6.5 Medium

Status

Awaiting Analysis - secalert@redhat.com

Published

2026-10-14

Last modified

2026-10-14

Weaknesses

CWE-191

Affected products

• Enterprise Linux (Redhat)
• Openshift (Redhat)
• Openstack (Redhat)

References

• https://access.redhat.com/security/cve/CVE-2026-86566
• https://bugzilla.redhat.com/show_bug.cgi?id=2529684