CVE-2026-80186: Bluez: stack overflow in name2utf8 causes dos and potential code execution

Description

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.

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Attack vector

Adjacent

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

Low

Integrity

Low

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.5% · higher than 43% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

RH

Red Hat Enterprise Linux 10 · Red Hat

All versions, or not specified · source: vendor

RH

Red Hat Enterprise Linux 7 · Red Hat

All versions, or not specified · source: vendor

RH

Red Hat Enterprise Linux 8 · Red Hat

All versions, or not specified · source: vendor

RH

Red Hat Enterprise Linux 9 · Red Hat

All versions, or not specified · source: vendor