Description
In BlueZ 5.42, a buffer overflow was observed in "pin_code_reply_dump" function in "tools/parser/hci.c" source file. The issue exists because "pin" array is overflowed by supplied parameter due to lack of boundary checks on size of the buffer from frame "pin_code_reply_cp *cp" parameter.
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 | No fix yet | — |
| 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 | No fix yet | — |
| Ubuntu 25.10 | bluez | No fix yet | — |
| Ubuntu 24.04 LTS | bluez | No fix yet | — |
| Ubuntu 22.04 LTS | bluez | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | bluez | No fix yet | — |
| Ubuntu Pro 18.04 LTS | bluez | No fix yet | — |
| Ubuntu Pro 16.04 LTS | bluez | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | bluez | 5.48-5.8.1 | SUSE-SU-2018:4189-1 |
| SLES 12 SP4 | bluez | 5.13-5.7.1 | SUSE-SU-2018:4188-1 |
| SLES 12 SP3 | bluez | 5.13-5.4.1 | SUSE-SU-2018:4188-1, SUSE-SU-2018:1778-1 |
| SLES 12 SP1 | bluez | 5.13-3.10.1 | SUSE-SU-2019:0510-1 |
| SLES 12 | bluez | 5.13-3.10.1 | SUSE-SU-2019:0510-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | bluez | 5.13-5.7.1 | SUSE-SU-2018:4188-1 |
| SLES for SAP 12 SP3 | bluez | 5.13-5.4.1 | SUSE-SU-2018:4188-1, SUSE-SU-2018:1778-1 |
| SLES for SAP 12 SP1 | bluez | 5.13-3.10.1 | SUSE-SU-2019:0510-1 |
Advisories 4
- SUSE-SU-2019:0510-1 Security update for bluez SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:4188-1 Security update for bluez SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:4189-1 Security update for bluez SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1778-1 Security update for bluez SUSE / openSUSE Security Updates · Feb 4, 2026