---
id: CVE-2024-49955
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ACPI: battery: Fix possible crash when unregistering a battery hook

  When a battery hook returns an error when adding a new battery, then
  the battery hook is automatica…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ACPI: battery: Fix possible crash when unregistering a battery hook

  When a battery hook returns an error when adding a new battery, then
  the battery hook is automatica…
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'
cwe:
  - CWE-672
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.17, < 5.10.227'
  - 'linux_kernel >= 5.11, < 5.15.168'
  - 'linux_kernel >= 5.16, < 6.1.113'
  - 'linux_kernel >= 6.2, < 6.6.55'
  - 'linux_kernel >= 6.7, < 6.10.14'
  - 'linux_kernel >= 6.11, < 6.11.3'
  - linux_kernel = 6.12
patched:
  - linux_kernel 6.11.3
published: '2024-10-21'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:19:02.440'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-49955'
references:
  - url: 'https://git.kernel.org/stable/c/07b98400cb0285a6348188aa8c5ec6a2ae0551f7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/76959aff14a0012ad6b984ec7686d163deccdc16'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/76fb2cbf01571926da8ecf6876cc8cb07d3f5183'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9f469ef1c79dac7f9ac1518643a33703918f7e13'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c47843a831e0eae007ad7e848d208e675ba4c132'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ca1fb7942a287b40659cc79551a1de54a2c2e7d5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ca26e8eed9c1c6651f51f7fa38fe444f8573cd1b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ce31847f109c3a5b2abdd19d7bcaafaacfde53de'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/da964de4c18199e14b961b5b2e5e6570552a313c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://lists.debian.org/debian-lts-announce/2025/01/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
  - 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-355557.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00339
epssPercentile: 0.27185
ingestedAt: '2026-10-15T03:30:12.756Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-10-22T13:35:51.725072Z'
---

## Overview

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

ACPI: battery: Fix possible crash when unregistering a battery hook

When a battery hook returns an error when adding a new battery, then
the battery hook is automatically unregistered.
However the battery hook provider cannot know that, so it will later
call battery_hook_unregister() on the already unregistered battery
hook, resulting in a crash.

Fix this by using the list head to mark already unregistered battery
hooks as already being unregistered so that they can be ignored by
battery_hook_unregister().

## Affected

- `linux_kernel >= 4.17, < 5.10.227`
- `linux_kernel >= 5.11, < 5.15.168`
- `linux_kernel >= 5.16, < 6.1.113`
- `linux_kernel >= 6.2, < 6.6.55`
- `linux_kernel >= 6.7, < 6.10.14`
- `linux_kernel >= 6.11, < 6.11.3`
- `linux_kernel = 6.12`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.11.3`