---
id: CVE-2022-50327
title: 'ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value

  The return value of acpi_fetch_acpi_dev() could be NULL, which would
  cause a NULL pointer dereference t…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= a36a7fecfe6071732075ad5aa31196adce13181b <
    8e8b5f12ee4ab6f5d252c9ca062a4ada9554e6d9
  - >-
    Linux >= a36a7fecfe6071732075ad5aa31196adce13181b <
    fdee7a0acc566c4194d40a501b8a1584e86cc208
  - >-
    Linux >= a36a7fecfe6071732075ad5aa31196adce13181b <
    ad1190744da9d812da55b76f2afce750afb0a3bd
  - >-
    Linux >= a36a7fecfe6071732075ad5aa31196adce13181b <
    2ecd629c788bbfb96be058edade2e934d3763eaf
  - >-
    Linux >= a36a7fecfe6071732075ad5aa31196adce13181b <
    b85f0e292f73f353eea915499604fbf50c8238b4
  - >-
    Linux >= a36a7fecfe6071732075ad5aa31196adce13181b <
    2437513a814b3e93bd02879740a8a06e52e2cf7d
  - Linux 4.8
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:10:02.354956Z'
published: '2025-09-15'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:10:35.508Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2022-50327'
references:
  - url: 'https://git.kernel.org/stable/c/8e8b5f12ee4ab6f5d252c9ca062a4ada9554e6d9'
  - url: 'https://git.kernel.org/stable/c/fdee7a0acc566c4194d40a501b8a1584e86cc208'
  - url: 'https://git.kernel.org/stable/c/ad1190744da9d812da55b76f2afce750afb0a3bd'
  - url: 'https://git.kernel.org/stable/c/2ecd629c788bbfb96be058edade2e934d3763eaf'
  - url: 'https://git.kernel.org/stable/c/b85f0e292f73f353eea915499604fbf50c8238b4'
  - url: 'https://git.kernel.org/stable/c/2437513a814b3e93bd02879740a8a06e52e2cf7d'
tags:
  - cve.org
epss: 0.0016
epssPercentile: 0.05161
ingestedAt: '2026-11-05T22:38:31.727Z'
---

## Overview

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

ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value

The return value of acpi_fetch_acpi_dev() could be NULL, which would
cause a NULL pointer dereference to occur in acpi_device_hid().

[ rjw: Subject and changelog edits, added empty line after if () ]

## Affected

- `Linux >= a36a7fecfe6071732075ad5aa31196adce13181b < 8e8b5f12ee4ab6f5d252c9ca062a4ada9554e6d9`
- `Linux >= a36a7fecfe6071732075ad5aa31196adce13181b < fdee7a0acc566c4194d40a501b8a1584e86cc208`
- `Linux >= a36a7fecfe6071732075ad5aa31196adce13181b < ad1190744da9d812da55b76f2afce750afb0a3bd`
- `Linux >= a36a7fecfe6071732075ad5aa31196adce13181b < 2ecd629c788bbfb96be058edade2e934d3763eaf`
- `Linux >= a36a7fecfe6071732075ad5aa31196adce13181b < b85f0e292f73f353eea915499604fbf50c8238b4`
- `Linux >= a36a7fecfe6071732075ad5aa31196adce13181b < 2437513a814b3e93bd02879740a8a06e52e2cf7d`
- `Linux 4.8`

## Remediation

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