---
id: CVE-2026-31779
title: >-
  wifi: iwlwifi: mvm: fix potential out-of-bounds read in
  iwl_mvm_nd_match_info_handler()
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  wifi: iwlwifi: mvm: fix potential out-of-bounds read in
  iwl_mvm_nd_match_info_handler()


  The memcpy function assumes the dynamic array notif->matches is at least

  as lar…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c <
    f6abac936a0dfd31d6c3e49205ec0ee75a8f887f
  - >-
    Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c <
    ffbed27ba15ef80d1c622eeedbfef03e501ae134
  - >-
    Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c <
    e67d8c626ace80b0fa2b48c8ec0a46b508c93442
  - >-
    Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c <
    dd90880eb5ec5442b37eb2b95688f4a63f4883e3
  - >-
    Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c <
    ca0e9491b98ca4c5b44204b0b3dd8062a3b5fba2
  - >-
    Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c <
    744fabc338e87b95c4d1ff7c95bc8c0f834c6d99
  - Linux 6.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T15:13:14.151530Z'
published: '2026-05-01'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:20:27.015Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-31779'
references:
  - url: 'https://git.kernel.org/stable/c/f6abac936a0dfd31d6c3e49205ec0ee75a8f887f'
  - url: 'https://git.kernel.org/stable/c/ffbed27ba15ef80d1c622eeedbfef03e501ae134'
  - url: 'https://git.kernel.org/stable/c/e67d8c626ace80b0fa2b48c8ec0a46b508c93442'
  - url: 'https://git.kernel.org/stable/c/dd90880eb5ec5442b37eb2b95688f4a63f4883e3'
  - url: 'https://git.kernel.org/stable/c/ca0e9491b98ca4c5b44204b0b3dd8062a3b5fba2'
  - url: 'https://git.kernel.org/stable/c/744fabc338e87b95c4d1ff7c95bc8c0f834c6d99'
tags:
  - cve.org
epss: 0.00409
epssPercentile: 0.3364
ingestedAt: '2026-10-16T17:24:46.675Z'
---

## Overview

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

wifi: iwlwifi: mvm: fix potential out-of-bounds read in iwl_mvm_nd_match_info_handler()

The memcpy function assumes the dynamic array notif->matches is at least
as large as the number of bytes to copy. Otherwise, results->matches may
contain unwanted data. To guarantee safety, extend the validation in one
of the checks to ensure sufficient packet length.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

## Affected

- `Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < f6abac936a0dfd31d6c3e49205ec0ee75a8f887f`
- `Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < ffbed27ba15ef80d1c622eeedbfef03e501ae134`
- `Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < e67d8c626ace80b0fa2b48c8ec0a46b508c93442`
- `Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < dd90880eb5ec5442b37eb2b95688f4a63f4883e3`
- `Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < ca0e9491b98ca4c5b44204b0b3dd8062a3b5fba2`
- `Linux >= 5ac54afd4d97ad8d94fe250c83b1924eb6d2268c < 744fabc338e87b95c4d1ff7c95bc8c0f834c6d99`
- `Linux 6.1`

## Remediation

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