Description
The cli_feat_read_cb() function in src/gatt-database.c does not perform bounds checks on the 'offset' variable before using it as an index into an array for reading.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| BlueZ | BlueZ | unspecified – < 5.56 | 5.56 |
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 | 5.55-3.1 | — |
| Debian 13 | bluez | 5.55-3.1 | — |
| Debian 12 | bluez | 5.55-3.1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | bluez | 5.53-0ubuntu3.2 | USN-4989-1 |
| Ubuntu 18.04 LTS | bluez | 5.48-0ubuntu3.5 | USN-4989-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | bluez | 5.55-3.6.1 | SUSE-SU-2021:2459-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | bluez | 5.65-4.1 | openSUSE-SU-2024:12446-1 |
| openSUSE Leap 15.3 | bluez | 5.55-3.6.1 | openSUSE-SU-2021:2459-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | bluez | 5.63-1 | — |
Advisories 4
- USN-4989-1 bluez vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- openSUSE-SU-2024:12446-1 bluez-5.65-4.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2459-1 Security update for bluez SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2459-1 Security update for bluez SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/bluez/bluez/issues/70
- GLSA-202209-16 vendor-advisory