---
id: CVE-2026-98889
title: 'wifi: iwlwifi: mvm: fix sched scan IE sizing'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: iwlwifi: mvm: fix sched scan IE sizing

  Scheduled scan built the probe request before iwl_mvm_scan_fits(),
  so oversized IEs could be copied into the fixed preq bu…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    f2268060e99f94314b9988dfa17393c2694fa9b2
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    358eca9a898ad4cce7453e9dcfd005d019a2b01f
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    05f79cea3b15cfe600b205ddcfd51ebee15d908a
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    a24417478f90e9f1a4ea24cd4b784afccb56fbae
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    0a63f98e5163a2ec2822dfb691ee5a6094de08ec
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    4f155d262b31b9b17e0f9856bdabe0968eb4930f
  - Linux < 5.15.222
  - Linux < 6.1.189
  - Linux < 6.6.158
  - Linux < 6.12.111
  - Linux < 6.18.53
  - Linux (all versions)
published: '2026-10-23'
updated: '2026-10-24'
sourceUpdated: '2026-10-24T14:09:27.923Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98889'
references:
  - url: 'https://git.kernel.org/stable/c/f2268060e99f94314b9988dfa17393c2694fa9b2'
  - url: 'https://git.kernel.org/stable/c/358eca9a898ad4cce7453e9dcfd005d019a2b01f'
  - url: 'https://git.kernel.org/stable/c/05f79cea3b15cfe600b205ddcfd51ebee15d908a'
  - url: 'https://git.kernel.org/stable/c/a24417478f90e9f1a4ea24cd4b784afccb56fbae'
  - url: 'https://git.kernel.org/stable/c/0a63f98e5163a2ec2822dfb691ee5a6094de08ec'
  - url: 'https://git.kernel.org/stable/c/4f155d262b31b9b17e0f9856bdabe0968eb4930f'
tags:
  - cve.org
epss: 0.00215
epssPercentile: 0.11279
ingestedAt: '2026-10-23T13:24:55.578Z'
---

## Overview

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

wifi: iwlwifi: mvm: fix sched scan IE sizing

Scheduled scan built the probe request before iwl_mvm_scan_fits(),
so oversized IEs could be copied into the fixed preq buffer before
length validation. Move iwl_mvm_build_scan_probe() after the fits
check.

Also advertise max_sched_scan_ie_len using iwl_mvm_max_scan_ie_len()
so userspace limits account for driver-inserted DS/TPC bytes.

## Affected

- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f2268060e99f94314b9988dfa17393c2694fa9b2`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 358eca9a898ad4cce7453e9dcfd005d019a2b01f`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 05f79cea3b15cfe600b205ddcfd51ebee15d908a`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a24417478f90e9f1a4ea24cd4b784afccb56fbae`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0a63f98e5163a2ec2822dfb691ee5a6094de08ec`
- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4f155d262b31b9b17e0f9856bdabe0968eb4930f`
- `Linux < 5.15.222`
- `Linux < 6.1.189`
- `Linux < 6.6.158`
- `Linux < 6.12.111`
- `Linux < 6.18.53`
- `Linux (all versions)`

## Remediation

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