---
id: CVE-2026-90351
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: mt7996: do not attach hif2 WED when the main WED attach failed

  If the WED attach for the primary PCIe function fails, the probe path
  still attached wed_hif…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: mt7996: do not attach hif2 WED when the main WED attach failed

  If the WED attach for the primary PCIe function fails, the probe path
  still attached wed_hif…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 83eafc9251d6d30574b629ac637c56d168fcbdd9 <
    76144da3c6184c7850631ad79d0600ac8bf7649a
  - >-
    Linux >= 83eafc9251d6d30574b629ac637c56d168fcbdd9 <
    d566387df8306257d2f703a0d99fd9896400317e
  - >-
    Linux >= 83eafc9251d6d30574b629ac637c56d168fcbdd9 <
    7c1924332e986019c6bcddf55c843361cccac73f
  - Linux 6.8
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:17:33.913'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90351'
references:
  - url: 'https://git.kernel.org/stable/c/76144da3c6184c7850631ad79d0600ac8bf7649a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7c1924332e986019c6bcddf55c843361cccac73f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d566387df8306257d2f703a0d99fd9896400317e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90351.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-90351'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2536641'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-90351'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90351'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90351.mbox
  - url: 'https://git.kernel.org/stable/c/9d1fd637336588d8118c104a025eca1341d9ec85'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-17T16:21:47.815Z'
epss: 0.00209
epssPercentile: 0.10972
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-455
---

## Overview

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

wifi: mt76: mt7996: do not attach hif2 WED when the main WED attach failed

If the WED attach for the primary PCIe function fails, the probe path
still attached wed_hif2 for the secondary function, leaving the device
in an inconsistent half-WED configuration that crashes later. The hif2
call also re-enabled hwrro_mode, which the failed primary attach had
just turned off.

Skip the hif2 WED setup when the primary WED device is not active.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90351.json)