---
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: medium
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
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98329.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98329'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2546480'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98329'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98329'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98329.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-10-06T08:50:17.403Z'
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-617
epss: 0.00168
epssPercentile: 0.06036
---

## 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.

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98329.json)