---
id: CVE-2026-86856
title: A flaw was found in the DPDK nfp vDPA driver
summary: >-
  A flaw was found in the DPDK nfp vDPA driver. Stack and heap buffers sized for
  a single queue pair can be overflowed when more virtqueues are configured,
  leading to a host crash or memory corruption.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H'
cwe:
  - CWE-787
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-2026-86856'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-86856'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2529897'
    label: secalert@redhat.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-14T18:47:39.319Z'
vendor: Red Hat
product: grout
affected:
  - grout (all versions)
  - openvswitch3.5 (all versions)
  - openvswitch3.6 (all versions)
  - openvswitch2.11 (all versions)
  - openvswitch2.12 (all versions)
  - openvswitch2.13 (all versions)
  - openvswitch2.15 (all versions)
  - openvswitch2.16 (all versions)
  - openvswitch2.17 (all versions)
  - openvswitch3.1 (all versions)
  - grout (all versions)
  - openvswitch2.17 (all versions)
  - openvswitch3.0 (all versions)
  - openvswitch3.1 (all versions)
  - openvswitch3.2 (all versions)
  - openvswitch3.3 (all versions)
  - openvswitch3.4 (all versions)
  - openvswitch3.5 (all versions)
  - openvswitch3.6 (all versions)
  - dpdk (all versions)
  - dpdk (all versions)
  - dpdk (all versions)
  - openvswitch2.17 (all versions)
  - openvswitch3.0 (all versions)
  - openvswitch3.1 (all versions)
  - openvswitch (all versions)
---

## Overview

A flaw was found in the DPDK nfp vDPA driver. Stack and heap buffers sized for a single queue pair can be overflowed when more virtqueues are configured, leading to a host crash or memory corruption.

## Remediation

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