---
id: CVE-2024-56637
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: ipset: Hold module reference while requesting a module

  User space may unload ip_set.ko while it is itself requesting a set type
  backend module, leading to a…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: ipset: Hold module reference while requesting a module

  User space may unload ip_set.ko while it is itself requesting a set type
  backend module, leading to a…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-362
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 2.6.39, < 5.4.287'
  - 'linux_kernel >= 5.5, < 5.10.231'
  - 'linux_kernel >= 5.11, < 5.15.174'
  - 'linux_kernel >= 5.16, < 6.1.120'
  - 'linux_kernel >= 6.2, < 6.6.66'
  - 'linux_kernel >= 6.7, < 6.12.5'
  - linux_kernel = 6.13
patched:
  - linux_kernel 6.12.5
published: '2024-12-27'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T22:18:01.827'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-56637'
references:
  - url: 'https://git.kernel.org/stable/c/0e67805e805c1f3edd6f43adbe08ea14b552694b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/456f010bfaefde84d3390c755eedb1b0a5857c3c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5bae60a933ba5d16eed55c6b279be51bcbbc79b0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6099b5d3e37145484fac4b8b4070c3f1abfb3519'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/90bf312a6b6b3d6012137f6776a4052ee85e0340'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ba5e070f36682d07ca7ad2a953e6c9d96be19dca'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e5e2d3024753fdaca818b822e3827614bacbdccf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
epss: 0.00178
epssPercentile: 0.07409
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T21:41:09.258954Z'
ingestedAt: '2026-10-15T22:48:25.444Z'
---

## Overview

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

netfilter: ipset: Hold module reference while requesting a module

User space may unload ip_set.ko while it is itself requesting a set type
backend module, leading to a kernel crash. The race condition may be
provoked by inserting an mdelay() right after the nfnl_unlock() call.

## Affected

- `linux_kernel >= 2.6.39, < 5.4.287`
- `linux_kernel >= 5.5, < 5.10.231`
- `linux_kernel >= 5.11, < 5.15.174`
- `linux_kernel >= 5.16, < 6.1.120`
- `linux_kernel >= 6.2, < 6.6.66`
- `linux_kernel >= 6.7, < 6.12.5`
- `linux_kernel = 6.13`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.12.5`