---
id: CVE-2022-3565
title: >-
  A vulnerability, which was classified as critical, has been found in Linux
  Kernel
summary: >-
  A vulnerability, which was classified as critical, has been found in Linux
  Kernel. Affected by this issue is the function del_timer of the file
  drivers/isdn/mISDN/l1oip_core.c of the component Bluetooth. The manipulation
  leads to use aft…
severity: medium
cvss: 4.6
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-119
  - CWE-662
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 2.6.27, < 4.9.331'
  - 'linux_kernel >= 4.10, < 4.14.296'
  - 'linux_kernel >= 4.15, < 4.19.262'
  - 'linux_kernel >= 4.20, < 5.4.220'
  - 'linux_kernel >= 5.5, < 5.10.150'
  - 'linux_kernel >= 5.11, < 5.15.75'
  - 'linux_kernel >= 5.16, < 5.19.17'
  - 'linux_kernel >= 6.0, < 6.0.3'
patched:
  - linux_kernel 6.0.3
published: '2022-10-17'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T14:17:24.597'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-3565'
references:
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=2568a7e0832ee30b0a351016d03062ab4e0e0a3f
    label: cna@vuldb.com
  - url: 'https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html'
    label: cna@vuldb.com
  - url: 'https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/?id.211088'
    label: cna@vuldb.com
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=2568a7e0832ee30b0a351016d03062ab4e0e0a3f
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://vuldb.com/?id.211088'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-794697.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00353
epssPercentile: 0.27772
ingestedAt: '2026-10-14T15:36:13.921Z'
---

## Overview

A vulnerability, which was classified as critical, has been found in Linux Kernel. Affected by this issue is the function del_timer of the file drivers/isdn/mISDN/l1oip_core.c of the component Bluetooth. The manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-211088.

## Affected

- `linux_kernel >= 2.6.27, < 4.9.331`
- `linux_kernel >= 4.10, < 4.14.296`
- `linux_kernel >= 4.15, < 4.19.262`
- `linux_kernel >= 4.20, < 5.4.220`
- `linux_kernel >= 5.5, < 5.10.150`
- `linux_kernel >= 5.11, < 5.15.75`
- `linux_kernel >= 5.16, < 5.19.17`
- `linux_kernel >= 6.0, < 6.0.3`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.0.3`