---
id: CVE-2026-80830
title: 'usb: core: Add lock to usb_wakeup_notification()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  usb: core: Add lock to usb_wakeup_notification()

  Add a spin lock to usb_wakeup notification to prevent a race condition
  with dereferencing freed memory. This could be …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b <
    a7a16167991c88016acef720927400404039d850
  - >-
    Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b <
    975ef630393c07fcbebf94f4d97043161b77a6ce
  - >-
    Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b <
    71cfda2fdf78041a01e9d94143baa79feabbdbf6
  - >-
    Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b <
    04ab260407972e631c86f2bc576cd8e64d65b325
  - >-
    Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b <
    bf2288583b4e072bdff17a233963619e4bc7a8b5
  - >-
    Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b <
    d80b946804674069db7ce6657319a71cf8eeaa5a
  - >-
    Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b <
    960ca456faf61824b178f47967340300b24183db
  - >-
    Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b <
    7c48aa0c1e79116b8af4b988d16ee29b427d6491
  - >-
    Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b <
    e263e18a9e7b1ff3e7301f0801c6ff87c31adfb6
  - Linux 3.4
published: '2026-09-04'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T08:44:22.699Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-80830'
references:
  - url: 'https://git.kernel.org/stable/c/a7a16167991c88016acef720927400404039d850'
  - url: 'https://git.kernel.org/stable/c/975ef630393c07fcbebf94f4d97043161b77a6ce'
  - url: 'https://git.kernel.org/stable/c/71cfda2fdf78041a01e9d94143baa79feabbdbf6'
  - url: 'https://git.kernel.org/stable/c/04ab260407972e631c86f2bc576cd8e64d65b325'
  - url: 'https://git.kernel.org/stable/c/bf2288583b4e072bdff17a233963619e4bc7a8b5'
  - url: 'https://git.kernel.org/stable/c/d80b946804674069db7ce6657319a71cf8eeaa5a'
  - url: 'https://git.kernel.org/stable/c/960ca456faf61824b178f47967340300b24183db'
  - url: 'https://git.kernel.org/stable/c/7c48aa0c1e79116b8af4b988d16ee29b427d6491'
  - url: 'https://git.kernel.org/stable/c/e263e18a9e7b1ff3e7301f0801c6ff87c31adfb6'
tags:
  - cve.org
epss: 0.00195
epssPercentile: 0.08589
ingestedAt: '2026-10-19T09:16:01.501Z'
---

## Overview

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

usb: core: Add lock to usb_wakeup_notification()

Add a spin lock to usb_wakeup notification to prevent a race condition
with dereferencing freed memory. This could be hit by the xHCI driver as
it calls this function from an IRQ and could race with the
hub_disconnect() function, which properly grabs this lock to protect the
state of the device.

## Affected

- `Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b < a7a16167991c88016acef720927400404039d850`
- `Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b < 975ef630393c07fcbebf94f4d97043161b77a6ce`
- `Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b < 71cfda2fdf78041a01e9d94143baa79feabbdbf6`
- `Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b < 04ab260407972e631c86f2bc576cd8e64d65b325`
- `Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b < bf2288583b4e072bdff17a233963619e4bc7a8b5`
- `Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b < d80b946804674069db7ce6657319a71cf8eeaa5a`
- `Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b < 960ca456faf61824b178f47967340300b24183db`
- `Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b < 7c48aa0c1e79116b8af4b988d16ee29b427d6491`
- `Linux >= 4ee823b83bc9851743fab756c76b27d6a1e2472b < e263e18a9e7b1ff3e7301f0801c6ff87c31adfb6`
- `Linux 3.4`

## Remediation

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