Description
An issue was discovered in bluetoothd in BlueZ through 5.48. The vulnerability lies in the handling of a SVC_ATTR_REQ by the SDP implementation. By crafting a malicious CSTATE, it is possible to trick the server into returning more bytes than the buffer actually holds, resulting in leaking arbitrary heap data. The root cause can be found in the function service_attr_req of sdpd-request.c. The server does not check whether the CSTATE data is the same in consecutive requests, and instead simply trusts that it is the same.
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 | — |
| Debian 10 | bluez | 5.50-1.2~deb10u3 | DLA-3157-1 |
| Debian 9 | bluez | 5.43-2+deb9u5 | DLA-2827-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | bluez | 5.48-0ubuntu3.6 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | bluez | 5.37-0ubuntu5.3+esm5 | USN-7265-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | bluez | 5.48-150200.13.17.1 | SUSE-SU-2022:3691-1 |
| SLES 15 SP1 | bluez | 5.48-150000.5.41.1 | SUSE-SU-2022:3687-1 |
| SLES 15 | bluez | 5.48-150000.5.41.1 | SUSE-SU-2022:3687-1 |
| SLES 12 SP5 | bluez | 5.13-5.31.1 | SUSE-SU-2022:3718-1 |
| SLES 12 SP4 | bluez | 5.13-5.31.1 | SUSE-SU-2022:3718-1 |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | bluez | 5.13-5.31.1 | SUSE-SU-2022:3718-1 |
| SLES 12 SP2 | bluez | 5.13-5.31.1 | SUSE-SU-2022:3718-1 |
| SLES for SAP 15 SP2 | bluez | 5.48-150200.13.17.1 | SUSE-SU-2022:3691-1 |
| SLES for SAP 15 SP1 | bluez | 5.48-150000.5.41.1 | SUSE-SU-2022:3687-1 |
| SLES for SAP 15 | bluez | 5.48-150000.5.41.1 | SUSE-SU-2022:3687-1 |
| SLES for SAP 12 SP5 | bluez | 5.13-5.31.1 | SUSE-SU-2022:3718-1 |
| SLES for SAP 12 SP4 | bluez | 5.13-5.31.1 | SUSE-SU-2022:3718-1 |
| SLE HPC 15 SP2 | bluez | 5.48-150200.13.17.1 | SUSE-SU-2022:3691-1 |
| SLE HPC 15 SP1 | bluez | 5.48-150000.5.41.1 | SUSE-SU-2022:3687-1 |
| SLE HPC 15 | bluez | 5.48-150000.5.41.1 | SUSE-SU-2022:3687-1 |
| SUSE OpenStack Cloud Crowbar 9 | bluez | 5.13-5.31.1 | SUSE-SU-2022:3718-1 |
| SUSE OpenStack Cloud 9 | bluez | 5.13-5.31.1 | SUSE-SU-2022:3718-1 |
| SUSE Manager Server 4.1 | bluez | 5.48-150200.13.17.1 | SUSE-SU-2022:3691-1 |
| SUSE Manager Retail Branch Server 4.1 | bluez | 5.48-150200.13.17.1 | SUSE-SU-2022:3691-1 |
| SUSE Manager Proxy 4.1 | bluez | 5.48-150200.13.17.1 | SUSE-SU-2022:3691-1 |
| SUSE Enterprise Storage 7 | bluez | 5.48-150200.13.17.1 | SUSE-SU-2022:3691-1 |
| SUSE Enterprise Storage 6 | bluez | 5.48-150000.5.41.1 | SUSE-SU-2022:3687-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | bluez +4 | 5.44-7.amzn2.0.3 | ALAS2-2023-2309 |
Advisories 7
- USN-7265-1 bluez vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-3157-1 bluez - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2827-1 bluez - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2022:3718-1 Security update for bluez SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3691-1 Security update for bluez SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3687-1 Security update for bluez SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2023-2309 Moderate: bluez security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 19, 2023