---
id: CVE-2026-90350
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: reject out-of-range link ids in mt76_vif_link()

  mt76_vif_link() indexes mvif->link[] without validating link_id, but
  callers pass mvif->deflink_id / msta->…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: reject out-of-range link ids in mt76_vif_link()

  mt76_vif_link() indexes mvif->link[] without validating link_id, but
  callers pass mvif->deflink_id / msta->…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= a9384b36a42afc2d715eb74c19a7ee558f09ef82 <
    13f6a9c786022d5213e84d494cc8717c378f5395
  - >-
    Linux >= a9384b36a42afc2d715eb74c19a7ee558f09ef82 <
    c1442c345ca8da857fadea1d0797b97347ab6984
  - >-
    Linux >= a9384b36a42afc2d715eb74c19a7ee558f09ef82 <
    9ba744a28c26eaa5cae930688a22e01888395308
  - Linux 6.15
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:17:33.810'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90350'
references:
  - url: 'https://git.kernel.org/stable/c/13f6a9c786022d5213e84d494cc8717c378f5395'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9ba744a28c26eaa5cae930688a22e01888395308'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c1442c345ca8da857fadea1d0797b97347ab6984'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-17T16:21:47.815Z'
epss: 0.00206
epssPercentile: 0.09439
---

## Overview

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

wifi: mt76: reject out-of-range link ids in mt76_vif_link()

mt76_vif_link() indexes mvif->link[] without validating link_id, but
callers pass mvif->deflink_id / msta->deflink_id, which hold
IEEE80211_LINK_UNSPECIFIED (0xf) until the first link has been added.
Since IEEE80211_MLD_MAX_NUM_LINKS is 15, that reads one element past the
end of the array, aliasing mt76_vif_data.offchannel_link.

Reachable via mt7996_set_tsf()/mt7996_offset_tsf() and
mt7996_net_fill_forward_path(). Bounds check link_id and return NULL,
matching mt7996_sta_link() and mt7996_sta_link_protected().

## Remediation

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