---
id: CVE-2024-40993
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: ipset: Fix suspicious rcu_dereference_protected()

  When destroying all sets, we are either in pernet exit phase or
  are executing a "destroy all sets command"…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: ipset: Fix suspicious rcu_dereference_protected()

  When destroying all sets, we are either in pernet exit phase or
  are executing a "destroy all sets command"…
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 = 6.1.95
  - linux_kernel = 6.6.35
  - linux_kernel = 6.9.6
  - linux_kernel = 6.10
published: '2024-07-12'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:18:40.213'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-40993'
references:
  - url: 'https://git.kernel.org/stable/c/3799d02ae4208af08e81310770d8754863a246a1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3fc09e1ca854bc234e007a56e0f7431f5e2defb5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/523bed6489e089dd8040e72453fb79da47b144c2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/72d9611968867cc4c5509e7708b1507d692b797a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/788d585e62f487bc4536d454937f737b70d39a33'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8ecd06277a7664f4ef018abae3abd3451d64e7a6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/94dd411c18d7fff9e411555d5c662d29416501e4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3799d02ae4208af08e81310770d8754863a246a1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/3fc09e1ca854bc234e007a56e0f7431f5e2defb5'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/523bed6489e089dd8040e72453fb79da47b144c2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/72d9611968867cc4c5509e7708b1507d692b797a'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/788d585e62f487bc4536d454937f737b70d39a33'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/8ecd06277a7664f4ef018abae3abd3451d64e7a6'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/94dd411c18d7fff9e411555d5c662d29416501e4'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2025/01/msg00001.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: 0.00276
epssPercentile: 0.1987
ingestedAt: '2026-10-15T03:30:12.724Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-09-10T17:01:41.687653Z'
---

## Overview

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

netfilter: ipset: Fix suspicious rcu_dereference_protected()

When destroying all sets, we are either in pernet exit phase or
are executing a "destroy all sets command" from userspace. The latter
was taken into account in ip_set_dereference() (nfnetlink mutex is held),
but the former was not. The patch adds the required check to
rcu_dereference_protected() in ip_set_dereference().

## Affected

- `linux_kernel = 6.1.95`
- `linux_kernel = 6.6.35`
- `linux_kernel = 6.9.6`
- `linux_kernel = 6.10`

## Remediation

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