---
id: CVE-2026-43267
title: 'wifi: rtw89: fix potential zero beacon interval in beacon tracking'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: rtw89: fix potential zero beacon interval in beacon tracking

  During fuzz testing, it was discovered that bss_conf->beacon_int
  might be zero, which could result i…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= d360551f265e3c942ce06cd6f4d2f7f67741bcbd <
    1260bee01493126cf9c872b6ca2af261173baa6d
  - >-
    Linux >= d360551f265e3c942ce06cd6f4d2f7f67741bcbd <
    e00c9a4ec84c0bb067833b34202f457badbbc1c1
  - >-
    Linux >= d360551f265e3c942ce06cd6f4d2f7f67741bcbd <
    eb57be32f438c57c88d6ce756101c1dfbcc03bba
  - Linux 6.18
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T15:32:44.071749Z'
published: '2026-05-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T15:42:45.667Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-43267'
references:
  - url: 'https://git.kernel.org/stable/c/1260bee01493126cf9c872b6ca2af261173baa6d'
  - url: 'https://git.kernel.org/stable/c/e00c9a4ec84c0bb067833b34202f457badbbc1c1'
  - url: 'https://git.kernel.org/stable/c/eb57be32f438c57c88d6ce756101c1dfbcc03bba'
tags:
  - cve.org
epss: 0.00117
epssPercentile: 0.01704
ingestedAt: '2026-11-06T15:54:03.955Z'
---

## Overview

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

wifi: rtw89: fix potential zero beacon interval in beacon tracking

During fuzz testing, it was discovered that bss_conf->beacon_int
might be zero, which could result in a division by zero error in
subsequent calculations. Set a default value of 100 TU if the
interval is zero to ensure stability.

## Affected

- `Linux >= d360551f265e3c942ce06cd6f4d2f7f67741bcbd < 1260bee01493126cf9c872b6ca2af261173baa6d`
- `Linux >= d360551f265e3c942ce06cd6f4d2f7f67741bcbd < e00c9a4ec84c0bb067833b34202f457badbbc1c1`
- `Linux >= d360551f265e3c942ce06cd6f4d2f7f67741bcbd < eb57be32f438c57c88d6ce756101c1dfbcc03bba`
- `Linux 6.18`

## Remediation

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