---
id: CVE-2026-98159
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: mt7921: validate CLC firmware records

  The CLC region is supplied by firmware, but the loader trusts the
  region count and each record length
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: mt7921: validate CLC firmware records

  The CLC region is supplied by firmware, but the loader trusts the
  region count and each record length. A malformed im…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-787
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 6.1, < 6.1.189'
  - 'linux_kernel >= 6.6, < 6.6.158'
  - 'linux_kernel >= 6.12, < 6.12.111'
  - 'linux_kernel >= 6.18, < 6.18.53'
  - 'linux_kernel >= 7.2, < 7.2.7'
patched:
  - linux_kernel 7.2.7
published: '2026-09-25'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T16:21:23.090'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98159'
references:
  - url: 'https://git.kernel.org/stable/c/3896be051e928c891922d91de94c99519d215dff'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3c505e2af16a9320f4355218394a955fbbc65322'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/46673662402884ca55a869e4ebe956e08e8b6b05'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/602a950134ee2940136f60797e4457c3983b06ce'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/740272d46ffc8231709a5e774cf5e4a5785b8a02'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9417c5818a0146980c2608fda94c908e604eb033'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98159.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98159'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2541323'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98159'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98159'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98159.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00114
epssPercentile: 0.01485
scores:
  nvd: 5.5
  vendor: 7
ingestedAt: '2026-09-25T11:06:38.803Z'
---

## Overview

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

wifi: mt76: mt7921: validate CLC firmware records

The CLC region is supplied by firmware, but the loader trusts the
region count and each record length. A malformed image can make the
region table pointer precede the firmware buffer, make the record loop
fail to advance, or index phy->clc past its end. Validate the table and
record bounds before dereferencing or copying.

## Affected

- `linux_kernel >= 6.1, < 6.1.189`
- `linux_kernel >= 6.6, < 6.6.158`
- `linux_kernel >= 6.12, < 6.12.111`
- `linux_kernel >= 6.18, < 6.18.53`
- `linux_kernel >= 7.2, < 7.2.7`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.2.7`

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-28 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98159.json)