---
id: CVE-2026-90380
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete

  A use-after-free issue occurs in mt76_rx_poll_complete due to a race
  condition
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete

  A use-after-free issue occurs in mt76_rx_poll_complete due to a race
  condition. The STA has already bee…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c948b5da6bbec742b433138e3e3f9537a85af2e5 <
    aaf414bf81ab4b680580871784b0b929818188eb
  - >-
    Linux >= c948b5da6bbec742b433138e3e3f9537a85af2e5 <
    b250943f3f8351385a17972bda001664a5c51008
  - >-
    Linux >= c948b5da6bbec742b433138e3e3f9537a85af2e5 <
    217f9e7bb02558759be9d9ecfe532e9708741c50
  - Linux 6.7
published: '2026-09-17'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T18:17:56.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90380'
references:
  - url: 'https://git.kernel.org/stable/c/217f9e7bb02558759be9d9ecfe532e9708741c50'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/aaf414bf81ab4b680580871784b0b929818188eb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b250943f3f8351385a17972bda001664a5c51008'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00309
epssPercentile: 0.23937
ingestedAt: '2026-09-17T16:21:47.806Z'
---

## Overview

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

wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete

A use-after-free issue occurs in mt76_rx_poll_complete due to a race
condition. The STA has already been removed, but the rx_status still
had a pointer to the wcid in the STA.

Set the links' wcid pointers to be NULL for a MLD in
mt7925_sta_pre_rcu_remove()

BUG: KASAN: invalid-access in mt76_rx_poll_complete+0x280/0x470
Call trace:
dump_backtrace+0xec/0x128
show_stack+0x18/0x28
dump_stack_lvl+0x40/0xc8
print_report+0x1b8/0x710
kasan_report+0xe0/0x144
do_bad_area+0x120/0x260
do_tag_check_fault+0x20/0x34
do_mem_abort+0x54/0xa8
el1_abort+0x3c/0x5c
el1h_64_sync_handler+0x40/0xcc
el1h_64_sync+0x7c/0x80
mt76_rx_poll_complete+0x280/0x470
mt76_dma_rx_poll+0x114/0x51c
mt792x_poll_rx+0x60/0xf8
napi_threaded_poll_loop+0xe0/0x450
napi_threaded_poll+0x80/0x9c
kthread+0x11c/0x158
ret_from_fork+0x10/0x20

## Remediation

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