---
id: CVE-2024-27431
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  cpumap: Zero-initialise xdp_rxq_info struct before running XDP program

  When running an XDP program that is attached to a cpumap entry, we don't
  initialise the xdp_rxq_…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  cpumap: Zero-initialise xdp_rxq_info struct before running XDP program

  When running an XDP program that is attached to a cpumap entry, we don't
  initialise the xdp_rxq_…
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-908
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.9, < 5.10.213'
  - 'linux_kernel >= 5.11, < 5.15.152'
  - 'linux_kernel >= 5.16, < 6.1.82'
  - 'linux_kernel >= 6.2, < 6.6.22'
  - 'linux_kernel >= 6.7, < 6.7.10'
  - linux_kernel = 6.8
  - debian_linux = 10.0
patched:
  - linux_kernel 6.7.10
published: '2024-05-17'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:17:40.920'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-27431'
references:
  - url: 'https://git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7b'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4a'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00232
epssPercentile: 0.14031
ingestedAt: '2026-10-15T03:30:12.678Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-05-17T16:29:06.840486Z'
---

## Overview

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

cpumap: Zero-initialise xdp_rxq_info struct before running XDP program

When running an XDP program that is attached to a cpumap entry, we don't
initialise the xdp_rxq_info data structure being used in the xdp_buff
that backs the XDP program invocation. Tobias noticed that this leads to
random values being returned as the xdp_md->rx_queue_index value for XDP
programs running in a cpumap.

This means we're basically returning the contents of the uninitialised
memory, which is bad. Fix this by zero-initialising the rxq data
structure before running the XDP program.

## Affected

- `linux_kernel >= 5.9, < 5.10.213`
- `linux_kernel >= 5.11, < 5.15.152`
- `linux_kernel >= 5.16, < 6.1.82`
- `linux_kernel >= 6.2, < 6.6.22`
- `linux_kernel >= 6.7, < 6.7.10`
- `linux_kernel = 6.8`
- `debian_linux = 10.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.7.10`