CVE-2026-80186
Publication date 25 August 2026
Last updated 9 October 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| bluez | 26.04 LTS resolute |
Fixed 5.85-4ubuntu0.3
|
| 24.04 LTS noble |
Fixed 5.72-0ubuntu5.7
|
|
| 22.04 LTS jammy |
Fixed 5.64-0ubuntu1.5
|
|
| 20.04 LTS focal |
Fixed 5.53-0ubuntu3.9+esm1
|
|
| 18.04 LTS bionic |
Fixed 5.48-0ubuntu3.9+esm3
|
|
| 16.04 LTS xenial |
Fixed 5.37-0ubuntu5.3+esm6
|
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CVSS version: CVSS v3.0
Base score
7.6 · High
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8908-1
- BlueZ vulnerabilities
- 8 October 2026