---
id: CVE-2026-86567
title: A flaw was found in DPDK lib/vhost
summary: >-
  A flaw was found in DPDK lib/vhost. The VDUSE handler fails to invalidate
  vring pointers when the IOTLB is invalidated, leading to use-after-unmap.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-416
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T20:13:37.910'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86567'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-86567'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2529685'
    label: secalert@redhat.com
tags:
  - nvd
ingestedAt: '2026-10-14T18:47:39.317Z'
---

## Overview

A flaw was found in DPDK lib/vhost. The VDUSE handler fails to invalidate vring pointers when the IOTLB is invalidated, leading to use-after-unmap.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.