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USN-5275-1: BlueZ vulnerability

8 February 2022

BlueZ could be made to crash or run programs if it received specially crafted network traffic.



  • bluez - Bluetooth tools and daemons


Ziming Zhang discovered that BlueZ incorrectly handled memory write operations
in its gatt server. A remote attacker could possibly use this to cause BlueZ to
crash leading to a denial of service, or potentially remotely execute code.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 21.10
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

In general, a standard system update will make all the necessary changes.