---
id: CVE-2026-74710
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  xsk: require at least 16 bytes of TX metadata

  AF_XDP accepts a TX metadata length as small as eight bytes, but every
  supported request needs the flags plus at least on…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  xsk: require at least 16 bytes of TX metadata

  AF_XDP accepts a TX metadata length as small as eight bytes, but every
  supported request needs the flags plus at least on…
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'
published: '2026-08-22'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74710'
references:
  - url: 'https://git.kernel.org/stable/c/1bb30b181d9f0484e141f8411e15ed906d5c6780'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/21b8536aee819792f1b4b38b9aacf2a073025d49'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/642c6e73fce17fdca93a5793c4d22359fda866d7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cfb9d2976b277e554e28c165e3eff4b4a8ea10bd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00129
epssPercentile: 0.02201
ingestedAt: '2026-10-14T13:30:58.544Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

xsk: require at least 16 bytes of TX metadata

AF_XDP accepts a TX metadata length as small as eight bytes, but every
supported request needs the flags plus at least one eight-byte request
field. Such short metadata also lets the kernel read beyond the registered
area.

Require 16 bytes rather than sizeof(struct xsk_tx_metadata) to preserve
compatibility with applications that do not use launch-time metadata.

## Remediation

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