---
id: CVE-2026-90354
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: mt7915: fix double hif2 init on the non-WED path

  mt7915_pci_init_hif2() was called unconditionally and again inside the
  WED-inactive branch
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: mt7915: fix double hif2 init on the non-WED path

  mt7915_pci_init_hif2() was called unconditionally and again inside the
  WED-inactive branch. The helper inc…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= cacdd67812c6df824704ac078f1770188a485ff9 <
    eac18fadc791928379b179e54636494b92f8cf86
  - >-
    Linux >= cacdd67812c6df824704ac078f1770188a485ff9 <
    927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6
  - >-
    Linux >= cacdd67812c6df824704ac078f1770188a485ff9 <
    bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe
  - >-
    Linux >= cacdd67812c6df824704ac078f1770188a485ff9 <
    249cbaa1873550689fab136b74982cbba74c4169
  - >-
    Linux >= cacdd67812c6df824704ac078f1770188a485ff9 <
    29fbc5256c2d8448f084ff179d2e5092ecd1fc54
  - >-
    Linux >= cacdd67812c6df824704ac078f1770188a485ff9 <
    3ae8ad277e2819a281b0e36b55633c8515c16ce7
  - Linux 5.18
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:17:34.260'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90354'
references:
  - url: 'https://git.kernel.org/stable/c/249cbaa1873550689fab136b74982cbba74c4169'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/29fbc5256c2d8448f084ff179d2e5092ecd1fc54'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3ae8ad277e2819a281b0e36b55633c8515c16ce7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/eac18fadc791928379b179e54636494b92f8cf86'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90354.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-90354'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2536746'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-90354'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90354'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90354.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-17T16:21:47.814Z'
epss: 0.00173
epssPercentile: 0.06645
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-772
---

## Overview

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

wifi: mt76: mt7915: fix double hif2 init on the non-WED path

mt7915_pci_init_hif2() was called unconditionally and again inside the
WED-inactive branch. The helper increments the global hif_idx, writes the
PCIe RECOG_ID register and takes a get_device() reference via
mt7915_pci_get_hif2(), while removal only drops one reference. On non-WED
dual-hif hardware this double-incremented hif_idx, wrote RECOG_ID twice and
leaked a device reference. Only the call inside the WED-inactive branch is
correct; drop the unconditional one. hif2 is already initialised to NULL.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-10-05 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90354.json)