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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | bluez | 5.87-3 | — |
| Debian 13 | bluez | No fix yet | — |
| Debian 12 | bluez | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | bluez | No fix yet | — |
| Ubuntu 26.04 LTS | bluez | 5.85-4ubuntu0.3 | USN-8908-1 |
| Ubuntu 24.04 LTS | bluez | 5.72-0ubuntu5.7 | USN-8908-1 |
| Ubuntu 22.04 LTS | bluez | 5.64-0ubuntu1.5 | USN-8908-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | bluez | 5.53-0ubuntu3.9+esm1 | USN-8908-1 |
| Ubuntu Pro 18.04 LTS | bluez | 5.48-0ubuntu3.9+esm3 | USN-8908-1 |
| Ubuntu Pro 16.04 LTS | bluez | 5.37-0ubuntu5.3+esm6 | USN-8908-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | bluez +7 | 5.62-2.amzn2023.0.6 | ALAS2023-2026-2146 |
Advisories 3
- WID-SEC-2026-3023 bluez: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 14, 2026
- USN-8908-1 bluez vulnerabilities Ubuntu Security Notices (USN) · Oct 9, 2026
- ALAS2023-2026-2146 Important: bluez security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 14, 2026