---
id: CVE-2026-89583
title: >-
  kernel: Bluetooth: eir: Fix OOB read in eir_get_service_data()
  (CVE-2026-89583)
summary: >-
  A flaw was found in the Linux kernel's Bluetooth subsystem. An out-of-bounds
  (OOB) read vulnerability exists in the `eir_get_service_data()` function due
  to incorrect length calculation when parsing Extended Inquiry Response (EIR)
  advertis…
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-125
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T18:38:27+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89583.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89583.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89583'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532057'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89583'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89583'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89583.mbox
  - url: 'https://git.kernel.org/stable/c/b6902adf81ea2ce14b1040dd97b6980050a8125a'
  - url: 'https://git.kernel.org/stable/c/1a28aae7f1fc8c06c0d02f153541be4fc7bacb74'
  - url: 'https://git.kernel.org/stable/c/815fc98c227a78cbd93d4c29f2833705b7c2bc0f'
  - url: 'https://git.kernel.org/stable/c/c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50'
  - url: 'https://git.kernel.org/stable/c/bb56e97bd67614238c1c0a4084704ccadbb875b4'
  - url: 'https://git.kernel.org/stable/c/4beb198bc59b242404a47c21990bc84165052c8a'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00409
epssPercentile: 0.32349
scores:
  vendor: 7
  cna: 8.1
ingestedAt: '2026-09-14T15:23:07.451Z'
---

## Overview

A flaw was found in the Linux kernel's Bluetooth subsystem. An out-of-bounds (OOB) read vulnerability exists in the `eir_get_service_data()` function due to incorrect length calculation when parsing Extended Inquiry Response (EIR) advertising data. A remote attacker, by sending a specially crafted periodic advertising payload, could exploit this to read sensitive information from kernel memory. This could lead to the disclosure of internal kernel data to a local user.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89583.json)

**kernel: Bluetooth: eir: Fix OOB read in eir_get_service_data()** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.

Affected:

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

No fix planned:

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

Not affected:

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

## Remediation

Affected