---
id: CVE-2026-46122
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: b43: enforce bounds check on firmware key index in b43_rx()

  The firmware-controlled key index in b43_rx() can exceed the dev->key[]
  array size (58 entries)
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: b43: enforce bounds check on firmware key index in b43_rx()

  The firmware-controlled key index in b43_rx() can exceed the dev->key[]
  array size (58 entries). The …
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'
cwe:
  - CWE-129
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 2.6.24, < 5.10.258'
  - 'linux_kernel >= 5.11, < 5.15.209'
  - 'linux_kernel >= 5.16, < 6.1.175'
  - 'linux_kernel >= 6.2, < 6.6.140'
  - 'linux_kernel >= 6.7, < 6.12.88'
  - 'linux_kernel >= 6.13, < 6.18.30'
  - 'linux_kernel >= 6.19, < 7.0.7'
  - linux_kernel = 7.1
patched:
  - linux_kernel 7.0.7
published: '2026-05-28'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:19:44.750'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46122'
references:
  - url: 'https://git.kernel.org/stable/c/135cb49c9a42a02cceeac7b49ec03e267f7ed6d6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1e9e55cf66f0fa4799f4d86ef3aaba8e606b5c14'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1f4f78bf8549e6ac4f04fba4176854f3a6e0c332'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/219ba67e69e49681e48c822d6eaafb5def032f34'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3157ad40b084a8f3932da2641749ab45e99b933e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/765709720e6af9a178abc40244a8d1aa39ac4e71'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c3d7b90dc95020cd9282c4630e402fe224f7644e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d7029879bafdac2006c67553807d122283dc6cbf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-784472.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00176
epssPercentile: 0.06618
ingestedAt: '2026-10-15T03:30:12.888Z'
---

## Overview

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

wifi: b43: enforce bounds check on firmware key index in b43_rx()

The firmware-controlled key index in b43_rx() can exceed the dev->key[]
array size (58 entries). The existing B43_WARN_ON is non-enforcing in
production builds, allowing an out-of-bounds read.

Make the B43_WARN_ON check enforcing by dropping the frame when the
firmware returns an invalid key index.

## Affected

- `linux_kernel >= 2.6.24, < 5.10.258`
- `linux_kernel >= 5.11, < 5.15.209`
- `linux_kernel >= 5.16, < 6.1.175`
- `linux_kernel >= 6.2, < 6.6.140`
- `linux_kernel >= 6.7, < 6.12.88`
- `linux_kernel >= 6.13, < 6.18.30`
- `linux_kernel >= 6.19, < 7.0.7`
- `linux_kernel = 7.1`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.7`