USN-4351-1: Linux firmware vulnerability

6 May 2020

linux-firmware vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS


The system could be made to expose sensitive information.

Software Description

  • linux-firmware - Firmware for Linux kernel drivers


Eli Biham and Lior Neumann discovered that certain Bluetooth devices incorrectly validated key exchange parameters. An attacker could possibly use this issue to obtain sensitive information.

Update instructions

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

Ubuntu 18.04 LTS
linux-firmware - 1.173.18
Ubuntu 16.04 LTS
linux-firmware - 1.157.23

To update your system, please follow these instructions:

After a standard system update you need to reboot your computer to make all the necessary changes.