---
id: CVE-2026-89569
title: >-
  kernel: Bluetooth: RFCOMM: serialize security confirmation handling
  (CVE-2026-89569)
summary: >-
  A flaw was found in the Linux kernel's Bluetooth RFCOMM subsystem. This
  vulnerability arises because the system does not properly manage memory when
  handling Bluetooth security confirmations. A race condition allows a part of
  the system to…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: vendor
cwe: CWE-825
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 7
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
  - enterprise_linux 6
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T18:56:44+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89569.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89569.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89569'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532060'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89569'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89569'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89569.mbox
  - url: 'https://git.kernel.org/stable/c/62ce8b33eb238cf18c15207332fbdc26d858f592'
  - url: 'https://git.kernel.org/stable/c/3873f3449701b3dc98cba577923be6493598e7a1'
  - url: 'https://git.kernel.org/stable/c/7ded3264106418c6456ccceaafd9fda596ce12c3'
  - url: 'https://git.kernel.org/stable/c/82425b14f0fb22e46cfddc56d6465570f5ed0ce6'
  - url: 'https://git.kernel.org/stable/c/1b7841ffad08e911e8c4b9470f3fa08423568940'
  - url: 'https://git.kernel.org/stable/c/946d76db77ee5f922968ce558629ae47b381e3fc'
  - url: 'https://git.kernel.org/stable/c/fbf7961964a6e93360179f64712320ae9a1e9577'
  - url: 'https://git.kernel.org/stable/c/759c185d0bbdb131357408f50b8735e04ed3caff'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.004
epssPercentile: 0.31572
scores:
  vendor: 7
  cna: 8.8
ingestedAt: '2026-09-14T15:23:07.451Z'
---

## Overview

A flaw was found in the Linux kernel's Bluetooth RFCOMM subsystem. This vulnerability arises because the system does not properly manage memory when handling Bluetooth security confirmations. A race condition allows a part of the system to free memory that is still in use by another part, leading to a "use-after-free" error. This can result in a system crash, causing a Denial of Service (DoS).

## Vendor advisories

- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4, Red Hat Enterprise Linux 6 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89569.json)

**kernel: Bluetooth: RFCOMM: serialize security confirmation handling** — rated Important by Red Hat. Released 2026-09-11, updated 2026-09-14.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat Enterprise Linux 6

No fix planned:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Affected