---
id: CVE-2026-86562
title: A flaw was found in DPDK lib/vhost
summary: >-
  A flaw was found in DPDK lib/vhost. A TOCTOU double-fetch of control-queue
  descriptors allows a heap buffer overflow with attacker-controlled content in
  the VDUSE control-queue handler.
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-362
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T17:20:05.420'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86562'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-86562'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2529667'
    label: secalert@redhat.com
  - url: >-
      https://git.dpdk.org/dpdk/commit/?id=6ec17781346e0fe4b566b6bf8f79be71f87c10e4
    label: secalert@redhat.com
tags:
  - nvd
ingestedAt: '2026-10-14T17:44:53.678Z'
---

## Overview

A flaw was found in DPDK lib/vhost. A TOCTOU double-fetch of control-queue descriptors allows a heap buffer overflow with attacker-controlled content in the VDUSE control-queue handler.

## Remediation

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