---
id: CVE-2023-53145
title: >-
  Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race
  condition
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race
  condition


  In btsdio_probe, the data->work is bound with btsdio_work. It will be

  started in btsdi…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= ddbaf13e3609442b64abb931ac21527772d87980 <
    6c3653627397a0d6eab19b20a59423e118985a6b
  - >-
    Linux >= ddbaf13e3609442b64abb931ac21527772d87980 <
    3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6e
  - >-
    Linux >= ddbaf13e3609442b64abb931ac21527772d87980 <
    a6650d27ab2c12a8ee750f396edb5ac8b4558b2e
  - >-
    Linux >= ddbaf13e3609442b64abb931ac21527772d87980 <
    746b363bef41cc159c051c47f9e30800bc6b520d
  - >-
    Linux >= ddbaf13e3609442b64abb931ac21527772d87980 <
    a5c2a467e9e789ae0891de55b766daac52e3b7b3
  - >-
    Linux >= ddbaf13e3609442b64abb931ac21527772d87980 <
    179c65828593aff1f444e15debd40a477cb23cf4
  - >-
    Linux >= ddbaf13e3609442b64abb931ac21527772d87980 <
    73f7b171b7c09139eb3c6a5677c200dc1be5f318
  - Linux 2.6.24
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:19:02.979322Z'
published: '2025-05-10'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:21:04.865Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-53145'
references:
  - url: 'https://git.kernel.org/stable/c/6c3653627397a0d6eab19b20a59423e118985a6b'
  - url: 'https://git.kernel.org/stable/c/3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6e'
  - url: 'https://git.kernel.org/stable/c/a6650d27ab2c12a8ee750f396edb5ac8b4558b2e'
  - url: 'https://git.kernel.org/stable/c/746b363bef41cc159c051c47f9e30800bc6b520d'
  - url: 'https://git.kernel.org/stable/c/a5c2a467e9e789ae0891de55b766daac52e3b7b3'
  - url: 'https://git.kernel.org/stable/c/179c65828593aff1f444e15debd40a477cb23cf4'
  - url: 'https://git.kernel.org/stable/c/73f7b171b7c09139eb3c6a5677c200dc1be5f318'
tags:
  - cve.org
epss: 0.00193
epssPercentile: 0.08971
ingestedAt: '2026-11-05T22:38:31.781Z'
---

## Overview

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

Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition

In btsdio_probe, the data->work is bound with btsdio_work. It will be
started in btsdio_send_frame.

If the btsdio_remove runs with a unfinished work, there may be a race
condition that hdev is freed but used in btsdio_work. Fix it by
canceling the work before do cleanup in btsdio_remove.

## Affected

- `Linux >= ddbaf13e3609442b64abb931ac21527772d87980 < 6c3653627397a0d6eab19b20a59423e118985a6b`
- `Linux >= ddbaf13e3609442b64abb931ac21527772d87980 < 3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6e`
- `Linux >= ddbaf13e3609442b64abb931ac21527772d87980 < a6650d27ab2c12a8ee750f396edb5ac8b4558b2e`
- `Linux >= ddbaf13e3609442b64abb931ac21527772d87980 < 746b363bef41cc159c051c47f9e30800bc6b520d`
- `Linux >= ddbaf13e3609442b64abb931ac21527772d87980 < a5c2a467e9e789ae0891de55b766daac52e3b7b3`
- `Linux >= ddbaf13e3609442b64abb931ac21527772d87980 < 179c65828593aff1f444e15debd40a477cb23cf4`
- `Linux >= ddbaf13e3609442b64abb931ac21527772d87980 < 73f7b171b7c09139eb3c6a5677c200dc1be5f318`
- `Linux 2.6.24`

## Remediation

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