---
id: CVE-2024-35955
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  kprobes: Fix possible use-after-free issue on kprobe registration

  When unloading a module, its state is changing MODULE_STATE_LIVE ->
   MODULE_STATE_GOING -> MODULE_STA…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  kprobes: Fix possible use-after-free issue on kprobe registration

  When unloading a module, its state is changing MODULE_STATE_LIVE ->
   MODULE_STATE_GOING -> MODULE_STA…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-416
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.14.291, < 4.15'
  - 'linux_kernel >= 4.19.256, < 4.19.313'
  - 'linux_kernel >= 5.4.211, < 5.4.275'
  - 'linux_kernel >= 5.10.137, < 5.10.216'
  - 'linux_kernel >= 5.15.61, < 5.15.157'
  - 'linux_kernel >= 5.18.18, < 5.19'
  - 'linux_kernel >= 5.19.2, < 6.1.87'
  - 'linux_kernel >= 6.2, < 6.6.28'
  - 'linux_kernel >= 6.7, < 6.8.7'
  - linux_kernel = 6.9
  - debian_linux = 10.0
patched:
  - linux_kernel 6.8.7
published: '2024-05-20'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:17:55.123'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-35955'
references:
  - url: 'https://git.kernel.org/stable/c/2df2dd27066cdba8041e46a64362325626bdfb2e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/325f3fb551f8cd672dbbfc4cf58b14f9ee3fc9e8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/36b57c7d2f8b7de224980f1a284432846ad71ca0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5062d1f4f07facbdade0f402d9a04a788f52e26d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/62029bc9ff2c17a4e3a2478d83418ec575413808'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/93eb31e7c3399e326259f2caa17be1e821f5a412'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b5808d40093403334d939e2c3c417144d12a6f33'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d15023fb407337028a654237d8968fefdcf87c2f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2df2dd27066cdba8041e46a64362325626bdfb2e'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/325f3fb551f8cd672dbbfc4cf58b14f9ee3fc9e8'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/36b57c7d2f8b7de224980f1a284432846ad71ca0'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/5062d1f4f07facbdade0f402d9a04a788f52e26d'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/62029bc9ff2c17a4e3a2478d83418ec575413808'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/93eb31e7c3399e326259f2caa17be1e821f5a412'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/b5808d40093403334d939e2c3c417144d12a6f33'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/d15023fb407337028a654237d8968fefdcf87c2f'
    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://lists.debian.org/debian-lts-announce/2024/06/msg00020.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-613116.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.01177
epssPercentile: 0.67434
ingestedAt: '2026-10-15T03:30:12.691Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2024-05-20T17:42:32.103628Z'
---

## Overview

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

kprobes: Fix possible use-after-free issue on kprobe registration

When unloading a module, its state is changing MODULE_STATE_LIVE ->
 MODULE_STATE_GOING -> MODULE_STATE_UNFORMED. Each change will take
a time. `is_module_text_address()` and `__module_text_address()`
works with MODULE_STATE_LIVE and MODULE_STATE_GOING.
If we use `is_module_text_address()` and `__module_text_address()`
separately, there is a chance that the first one is succeeded but the
next one is failed because module->state becomes MODULE_STATE_UNFORMED
between those operations.

In `check_kprobe_address_safe()`, if the second `__module_text_address()`
is failed, that is ignored because it expected a kernel_text address.
But it may have failed simply because module->state has been changed
to MODULE_STATE_UNFORMED. In this case, arm_kprobe() will try to modify
non-exist module text address (use-after-free).

To fix this problem, we should not use separated `is_module_text_address()`
and `__module_text_address()`, but use only `__module_text_address()`
once and do `try_module_get(module)` which is only available with
MODULE_STATE_LIVE.

## Affected

- `linux_kernel >= 4.14.291, < 4.15`
- `linux_kernel >= 4.19.256, < 4.19.313`
- `linux_kernel >= 5.4.211, < 5.4.275`
- `linux_kernel >= 5.10.137, < 5.10.216`
- `linux_kernel >= 5.15.61, < 5.15.157`
- `linux_kernel >= 5.18.18, < 5.19`
- `linux_kernel >= 5.19.2, < 6.1.87`
- `linux_kernel >= 6.2, < 6.6.28`
- `linux_kernel >= 6.7, < 6.8.7`
- `linux_kernel = 6.9`
- `debian_linux = 10.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.8.7`