CVE-2026-86566

Published: Oct 14, 2026Modified: Oct 14, 2026

6.5

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Exploitability: 2.0 / Impact: 4.0

Source: secalert@redhat.com (Secondary)

Description

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.

Related CWEs

CWE-191

Integer Underflow (Wrap or Wraparound)

The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

References (2)

https://access.redhat.com/security/cve/CVE-2026-86566

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2529684

Source: secalert@redhat.com

Timeline

No history available yet.