---
id: CVE-2026-98329
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mac80211: don't allow injecting frames wider than the chanctx

  Frames injected on a monitor interface can carry a radiotap
  field requesting a bandwidth, which mac…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mac80211: don't allow injecting frames wider than the chanctx

  Frames injected on a monitor interface can carry a radiotap
  field requesting a bandwidth, which mac…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 646e76bb5daf4ca38438c69ffb72cccb605f3466 <
    a5c715eda066cba5ce3372759188ba8636dca629
  - >-
    Linux >= 646e76bb5daf4ca38438c69ffb72cccb605f3466 <
    73f48f7e16cadfc74f444ccd10c1d3ae253e2e27
  - >-
    Linux >= 646e76bb5daf4ca38438c69ffb72cccb605f3466 <
    c69718519a81e87284494d0c6e6eb7bdd834707a
  - >-
    Linux >= 646e76bb5daf4ca38438c69ffb72cccb605f3466 <
    e14bf37bb2b3853012ff160131d1c6233f7a9cc9
  - Linux 4.7
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:25.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98329'
references:
  - url: 'https://git.kernel.org/stable/c/73f48f7e16cadfc74f444ccd10c1d3ae253e2e27'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a5c715eda066cba5ce3372759188ba8636dca629'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c69718519a81e87284494d0c6e6eb7bdd834707a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e14bf37bb2b3853012ff160131d1c6233f7a9cc9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.403Z'
---

## Overview

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

wifi: mac80211: don't allow injecting frames wider than the chanctx

Frames injected on a monitor interface can carry a radiotap
field requesting a bandwidth, which mac80211 passes down to
the driver regardless of the the actual operational bandwidth.

If the bandwidth requested is too wide, that triggers a warning
in hwsim:

  WARN_ON(hwsim_get_chanwidth(bw) > hwsim_get_chanwidth(confbw))

Drop such frames entirely instead since they cannot be sent.

## Remediation

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