---
id: CVE-2026-22978
title: 'wifi: avoid kernel-infoleak from struct iw_point'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: avoid kernel-infoleak from struct iw_point

  struct iw_point has a 32bit hole on 64bit arches.

  struct iw_point {
    void __user   *pointer;       /* Pointer to the…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 <
    d943b5f592767b107ba8c12a902f17431350378c
  - >-
    Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 <
    a3827e310b5a73535646ef4a552d53b3c8bf74f6
  - >-
    Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 <
    442ceac0393185e9982323f6682a52a53e8462b1
  - >-
    Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 <
    d21ec867d84c9f3a9845d7d8c90c9ce35dbe48f8
  - >-
    Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 <
    024f71a57d563fbe162e528c8bf2d27e9cac7c7b
  - >-
    Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 <
    e3c35177103ead4658b8a62f41e3080d45885464
  - >-
    Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 <
    21cbf883d073abbfe09e3924466aa5e0449e7261
  - Linux 2.6.27
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T21:17:32.819777Z'
published: '2026-01-23'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T21:23:13.323Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-22978'
references:
  - url: 'https://git.kernel.org/stable/c/d943b5f592767b107ba8c12a902f17431350378c'
  - url: 'https://git.kernel.org/stable/c/a3827e310b5a73535646ef4a552d53b3c8bf74f6'
  - url: 'https://git.kernel.org/stable/c/442ceac0393185e9982323f6682a52a53e8462b1'
  - url: 'https://git.kernel.org/stable/c/d21ec867d84c9f3a9845d7d8c90c9ce35dbe48f8'
  - url: 'https://git.kernel.org/stable/c/024f71a57d563fbe162e528c8bf2d27e9cac7c7b'
  - url: 'https://git.kernel.org/stable/c/e3c35177103ead4658b8a62f41e3080d45885464'
  - url: 'https://git.kernel.org/stable/c/21cbf883d073abbfe09e3924466aa5e0449e7261'
tags:
  - cve.org
epss: 0.00138
epssPercentile: 0.03197
ingestedAt: '2026-11-05T22:38:32.063Z'
---

## Overview

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

wifi: avoid kernel-infoleak from struct iw_point

struct iw_point has a 32bit hole on 64bit arches.

struct iw_point {
  void __user   *pointer;       /* Pointer to the data  (in user space) */
  __u16         length;         /* number of fields or size in bytes */
  __u16         flags;          /* Optional params */
};

Make sure to zero the structure to avoid disclosing 32bits of kernel data
to user space.

## Affected

- `Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 < d943b5f592767b107ba8c12a902f17431350378c`
- `Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 < a3827e310b5a73535646ef4a552d53b3c8bf74f6`
- `Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 < 442ceac0393185e9982323f6682a52a53e8462b1`
- `Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 < d21ec867d84c9f3a9845d7d8c90c9ce35dbe48f8`
- `Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 < 024f71a57d563fbe162e528c8bf2d27e9cac7c7b`
- `Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 < e3c35177103ead4658b8a62f41e3080d45885464`
- `Linux >= 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 < 21cbf883d073abbfe09e3924466aa5e0449e7261`
- `Linux 2.6.27`

## Remediation

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