---
id: CVE-2026-80186
title: 'Bluez: stack overflow in name2utf8 causes dos and potential code execution'
summary: >-
  A stack-based buffer overflow vulnerability exists in BlueZ, the Linux
  Bluetooth protocol stack. A remote user within Bluetooth radio range can send
  a specially crafted Extended Inquiry Response (EIR) packet that causes a
  buffer overflow…
severity: high
cvss: 7.6
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H'
cvssSource: cna
cwe:
  - CWE-120
vendor: Red Hat
product: bluez
affected:
  - bluez (all versions)
  - bluez
  - bluez (all versions)
  - bluez (all versions)
  - bluez (all versions)
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-27T14:27:17.054717Z'
published: '2026-08-25'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T11:51:22.918Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-80186'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80186'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2524132'
    label: RHBZ#2524132
  - url: 'https://github.com/bluez/bluez/security/advisories/GHSA-68h6-5qgp-3975'
tags:
  - cve.org
epss: 0.00501
epssPercentile: 0.41477
ingestedAt: '2026-10-16T12:05:46.479Z'
---

## Overview

A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.

## Affected

- `bluez (all versions)`
- `bluez`
- `bluez (all versions)`
- `bluez (all versions)`
- `bluez (all versions)`

## Remediation

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

### Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.