---
id: CVE-2026-98350
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: brcmfmac: cyw: pass PMKID to firmware if present

  Zero out auth_status on initialization
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: brcmfmac: cyw: pass PMKID to firmware if present

  Zero out auth_status on initialization. Otherwise, garbage will
  leak from the stack to the firmware (when ssid i…
severity: high
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 66f909308a7c05082919ff214a0bbe2a76aa0283 <
    c2cf589c7d546557ed60c43f2ec014279265dfbf
  - >-
    Linux >= 66f909308a7c05082919ff214a0bbe2a76aa0283 <
    6fba6233e9ca7718661e53555a3961c58772c21a
  - >-
    Linux >= 66f909308a7c05082919ff214a0bbe2a76aa0283 <
    e2de8d5eb2984416affdd9559e55f37c7f1bbf47
  - Linux 6.16
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:28.283'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98350'
references:
  - url: 'https://git.kernel.org/stable/c/6fba6233e9ca7718661e53555a3961c58772c21a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c2cf589c7d546557ed60c43f2ec014279265dfbf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e2de8d5eb2984416affdd9559e55f37c7f1bbf47'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98350.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98350'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2546492'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98350'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98350'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98350.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-10-06T08:50:17.398Z'
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: vendor
cwe:
  - CWE-908
epss: 0.00188
epssPercentile: 0.0836
---

## Overview

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

wifi: brcmfmac: cyw: pass PMKID to firmware if present

Zero out auth_status on initialization. Otherwise, garbage will
leak from the stack to the firmware (when ssid is less than 32 bytes
and/or when params->pmkid is set). Then, pass the params->pmkid to the
firmware (without it, the firmware caches a garbage PMKID on successful
authentication and denies a subsequent association request that includes
the PMKID).

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-10 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98350.json)