---
id: CVE-2024-36922
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: read txq->read_ptr under lock

  If we read txq->read_ptr without lock, we can read the same
  value twice, then obtain the lock, and reclaim from there
  to t…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: read txq->read_ptr under lock

  If we read txq->read_ptr without lock, we can read the same
  value twice, then obtain the lock, and reclaim from there
  to t…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: linux
product: linux_kernel
affected:
  - linux_kernel < 6.6.31
  - 'linux_kernel >= 6.7, < 6.8.10'
  - linux_kernel = 6.9
patched:
  - linux_kernel 6.8.10
published: '2024-05-30'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:18:25.263'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-36922'
references:
  - url: 'https://git.kernel.org/stable/c/43d07103df670484cdd26f9588eabef80f69db89'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/aab7b39fcac5f6165f6434bcbb56bb7865d4ad2b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b83db8e756dec68a950ed2f056248b1704b3deaa'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c2ace6300600c634553657785dfe5ea0ed688ac2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f30e8af109818c9db08cbcc46eb9713fe4b530ba'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/43d07103df670484cdd26f9588eabef80f69db89'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/b83db8e756dec68a950ed2f056248b1704b3deaa'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/c2ace6300600c634553657785dfe5ea0ed688ac2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-784472.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00347
epssPercentile: 0.28076
ingestedAt: '2026-10-15T03:30:12.701Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-09-10T17:16:00.944037Z'
---

## Overview

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

wifi: iwlwifi: read txq->read_ptr under lock

If we read txq->read_ptr without lock, we can read the same
value twice, then obtain the lock, and reclaim from there
to two different places, but crucially reclaim the same
entry twice, resulting in the WARN_ONCE() a little later.
Fix that by reading txq->read_ptr under lock.

## Affected

- `linux_kernel < 6.6.31`
- `linux_kernel >= 6.7, < 6.8.10`
- `linux_kernel = 6.9`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.8.10`