---
id: CVE-2026-86846
title: A flaw was found in DPDK lib/vhost vhost-crypto
summary: >-
  A flaw was found in DPDK lib/vhost vhost-crypto. A guest can supply an
  avail-ring descriptor index that is used without bounds checking, causing an
  out-of-bounds write in the host vhost-crypto backend.
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-2026-86846'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-86846'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2529846'
    label: secalert@redhat.com
tags:
  - nvd
ingestedAt: '2026-10-14T18:47:39.318Z'
---

## Overview

A flaw was found in DPDK lib/vhost vhost-crypto. A guest can supply an avail-ring descriptor index that is used without bounds checking, causing an out-of-bounds write in the host vhost-crypto backend.

## Remediation

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