---
id: CVE-2022-50473
title: 'cpufreq: Init completion before kobject_init_and_add()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  cpufreq: Init completion before kobject_init_and_add()

  In cpufreq_policy_alloc(), it will call uninitialed completion in
  cpufreq_sysfs_release() when kobject_init_and_…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee <
    3cdd91a9163248935720927531066b74f57aa43b
  - >-
    Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee <
    e379b88a8f8cffc99b318e028705ed9e3da0e1e0
  - >-
    Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee <
    8fb4c98f20dfca1237de2e3dfdbe78d156784fd3
  - >-
    Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee <
    d88540acfc7a17079021d866de914112c396edb1
  - >-
    Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee <
    e7c0c943ed675b66d4bbb16c51c6a3bb58da047e
  - >-
    Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee <
    5c51054896bcce1d33d39fead2af73fec24f40b6
  - Linux e977b1477a6725868302957e6b5c330220391797
  - Linux >= 5.1.6 < 5.2
  - Linux 5.2
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:11:42.540580Z'
published: '2025-10-04'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:20:47.562Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2022-50473'
references:
  - url: 'https://git.kernel.org/stable/c/3cdd91a9163248935720927531066b74f57aa43b'
  - url: 'https://git.kernel.org/stable/c/e379b88a8f8cffc99b318e028705ed9e3da0e1e0'
  - url: 'https://git.kernel.org/stable/c/8fb4c98f20dfca1237de2e3dfdbe78d156784fd3'
  - url: 'https://git.kernel.org/stable/c/d88540acfc7a17079021d866de914112c396edb1'
  - url: 'https://git.kernel.org/stable/c/e7c0c943ed675b66d4bbb16c51c6a3bb58da047e'
  - url: 'https://git.kernel.org/stable/c/5c51054896bcce1d33d39fead2af73fec24f40b6'
tags:
  - cve.org
epss: 0.0016
epssPercentile: 0.05147
ingestedAt: '2026-11-05T22:38:31.739Z'
---

## Overview

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

cpufreq: Init completion before kobject_init_and_add()

In cpufreq_policy_alloc(), it will call uninitialed completion in
cpufreq_sysfs_release() when kobject_init_and_add() fails. And
that will cause a crash such as the following page fault in complete:

BUG: unable to handle page fault for address: fffffffffffffff8
[..]
RIP: 0010:complete+0x98/0x1f0
[..]
Call Trace:
 kobject_put+0x1be/0x4c0
 cpufreq_online.cold+0xee/0x1fd
 cpufreq_add_dev+0x183/0x1e0
 subsys_interface_register+0x3f5/0x4e0
 cpufreq_register_driver+0x3b7/0x670
 acpi_cpufreq_init+0x56c/0x1000 [acpi_cpufreq]
 do_one_initcall+0x13d/0x780
 do_init_module+0x1c3/0x630
 load_module+0x6e67/0x73b0
 __do_sys_finit_module+0x181/0x240
 do_syscall_64+0x35/0x80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

## Affected

- `Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < 3cdd91a9163248935720927531066b74f57aa43b`
- `Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < e379b88a8f8cffc99b318e028705ed9e3da0e1e0`
- `Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < 8fb4c98f20dfca1237de2e3dfdbe78d156784fd3`
- `Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < d88540acfc7a17079021d866de914112c396edb1`
- `Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < e7c0c943ed675b66d4bbb16c51c6a3bb58da047e`
- `Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < 5c51054896bcce1d33d39fead2af73fec24f40b6`
- `Linux e977b1477a6725868302957e6b5c330220391797`
- `Linux >= 5.1.6 < 5.2`
- `Linux 5.2`

## Remediation

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