Description
A bug in Bluez may allow for the Bluetooth Discoverable state being set to on when no Bluetooth agent is registered with the system. This situation could lead to the unauthorized pairing of certain Bluetooth devices without any form of authentication. Versions before bluez 5.51 are vulnerable.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The Bluez Project | bluez | before 5.51 | — |
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 | 5.54-1 | — |
| Debian 13 | bluez | 5.54-1 | — |
| Debian 12 | bluez | 5.54-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | gnome-bluetooth | 3.28.0-2ubuntu0.1 | USN-3856-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | bluez | No fix yet | — |
| Ubuntu Pro 16.04 LTS | bluez | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | bluez +5 | 5.50-3.el8 | RHSA-2020:1912 |
| RHEL 7 | bluez +4 | 5.44-6.el7 | RHSA-2020:1101 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | bluez +5 | 5.50-3.el8 | ELSA-2020-1912 |
| Oracle Linux 7 | bluez +4 | 5.44-6.el7 | ELSA-2020-1101 |
Advisories 6
- RHSA-2020:1912 Red Hat Security Advisory: bluez security update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2020:1101 Red Hat Security Advisory: bluez security update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- USN-3856-1 gnome-bluetooth vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- WID-SEC-2025-2548 Red Hat Enterprise Linux: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 2, 2025
- ELSA-2020-1912 Low: bluez security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 5, 2020
- ELSA-2020-1101 Low: bluez security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 6, 2020
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10910
- USN-3856-1 vendor-advisory