---
id: CVE-2026-53102
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: Fix memory leak after mt76_connac_mcu_alloc_sta_req()

  mt76_connac_mcu_alloc_sta_req() allocates an skb which is expected to
  be freed eventually by mt76_mcu…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mt76: Fix memory leak after mt76_connac_mcu_alloc_sta_req()

  mt76_connac_mcu_alloc_sta_req() allocates an skb which is expected to
  be freed eventually by mt76_mcu…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-401
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.18, < 7.0.10'
patched:
  - linux_kernel 7.0.10
published: '2026-06-24'
updated: '2026-09-07'
sourceUpdated: '2026-09-07T16:17:28.540'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53102'
references:
  - url: 'https://git.kernel.org/stable/c/7de35b99503012e57bec027e98ed53f881518b5b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8527ac1bce87aaabde6755e8e6eb2a9f439d1292'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c41075ce8cf05ed8c0e7b7efef000dce548ffc42'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/eb466406d2094deefadc2cd6ddb4f6eeb086d1b4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00162
epssPercentile: 0.04602
ingestedAt: '2026-09-08T13:33:25.516Z'
---

## Overview

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

wifi: mt76: Fix memory leak after mt76_connac_mcu_alloc_sta_req()

mt76_connac_mcu_alloc_sta_req() allocates an skb which is expected to
be freed eventually by mt76_mcu_skb_send_msg(). However, currently if
an intermediate function fails before sending, the allocated skb is
leaked.

Specifically, mt76_connac_mcu_sta_wed_update() and
mt76_connac_mcu_sta_key_tlv() may fail, leading to an immediate memory
leak in the error path.

Fix this by explicitly freeing the skb in these error paths.
Commit 7c0f63fe37a5 ("wifi: mt76: mt7996: fix memory leak on
mt7996_mcu_sta_key_tlv error") made a similar change.

Compile tested only. Issue found using a prototype static analysis tool
and code review.

## Affected

- `linux_kernel >= 5.18, < 7.0.10`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.10`