Your submission was sent successfully! Close

USN-4718-1: fastd vulnerability

2 February 2021

fastd could be made to denial of service it if received a specially crafted input.



  • fastd - Fast and Secure Tunneling Daemon


It was discovered that fastd incorrectly handled certain packets.
An attacker could possibly use this issue to cause a denial of service.

Update instructions

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

Ubuntu 20.10
Ubuntu 18.04
Ubuntu 16.04

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


Related notices