This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-80186 →

UBUNTU-CVE-2026-80186

A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Ubuntu:Pro:16.04:LTS bluez

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.37-0ubuntu5.3+esm6"}]}]

Ubuntu:Pro:18.04:LTS bluez

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.48-0ubuntu3.9+esm3"}]}]

Ubuntu:Pro:20.04:LTS bluez

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.53-0ubuntu3.9+esm1"}]}]

Ubuntu:22.04:LTS bluez

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.64-0ubuntu1.5"}]}]

Ubuntu:24.04:LTS bluez

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.72-0ubuntu5.7"}]}]

Ubuntu:26.10 bluez

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.04:LTS bluez

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.85-4ubuntu0.3"}]}]

References

advisory ubuntu.com
report ubuntu.com
report cve.org
report github.com