---
id: CVE-2026-43024
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: nf_tables: reject immediate NF_QUEUE verdict

  nft_queue is always used from userspace nftables to deliver the NF_QUEUE
  verdict
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: nf_tables: reject immediate NF_QUEUE verdict

  nft_queue is always used from userspace nftables to deliver the NF_QUEUE
  verdict. Immediately emitting an NF_QU…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.19.307, < 4.20'
  - 'linux_kernel >= 5.4.269, < 5.5'
  - 'linux_kernel >= 5.10.210, < 5.10.253'
  - 'linux_kernel >= 5.15.149, < 5.15.203'
  - 'linux_kernel >= 6.1.76, < 6.1.168'
  - 'linux_kernel >= 6.6.15, < 6.6.134'
  - 'linux_kernel >= 6.7.3, < 6.8'
  - 'linux_kernel >= 6.8.1, < 6.12.81'
  - 'linux_kernel >= 6.13, < 6.18.22'
  - 'linux_kernel >= 6.19, < 6.19.12'
  - linux_kernel = 6.8
  - linux_kernel = 7.0
patched:
  - linux_kernel 6.19.12
published: '2026-05-01'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:19:24.587'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-43024'
references:
  - url: 'https://git.kernel.org/stable/c/17dc5d5a935c771338430cbc156a16a51cfd31e8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2f7f825a548be55420f0f5f716f6c27b9d312d3f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/42a47f4b1b7695026ab9bc1bb35d4622b0835c95'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4b12a3cc3f075e750cc3c5e693fd25fb400af4a2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/68390437a998c3f2c57212b413abef5e6d657d88'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/da107398cbd4bbdb6bffecb2ce86d5c9384f4cec'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f140593901724cfbd16597c3a4fcb24a58ae44b0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f710691be163ae6b39e4bcab9e5be32d329f035b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-019113.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-082556.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-457936.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00129
epssPercentile: 0.02496
ingestedAt: '2026-09-08T15:33:26.989Z'
---

## Overview

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

netfilter: nf_tables: reject immediate NF_QUEUE verdict

nft_queue is always used from userspace nftables to deliver the NF_QUEUE
verdict. Immediately emitting an NF_QUEUE verdict is never used by the
userspace nft tools, so reject immediate NF_QUEUE verdicts.

The arp family does not provide queue support, but such an immediate
verdict is still reachable. Globally reject NF_QUEUE immediate verdicts
to address this issue.

## Affected

- `linux_kernel >= 4.19.307, < 4.20`
- `linux_kernel >= 5.4.269, < 5.5`
- `linux_kernel >= 5.10.210, < 5.10.253`
- `linux_kernel >= 5.15.149, < 5.15.203`
- `linux_kernel >= 6.1.76, < 6.1.168`
- `linux_kernel >= 6.6.15, < 6.6.134`
- `linux_kernel >= 6.7.3, < 6.8`
- `linux_kernel >= 6.8.1, < 6.12.81`
- `linux_kernel >= 6.13, < 6.18.22`
- `linux_kernel >= 6.19, < 6.19.12`
- `linux_kernel = 6.8`
- `linux_kernel = 7.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.19.12`