[USN-6097-1] Linux PTP vulnerability
Ubuntu Security Notice USN-6097-1
May 29, 2023
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
Linux PTP could be made to crash, run arbitrary code, or expose
sensitive information if it received specially crafted input.
- linuxptp: Precision Time Protocol (PTP, IEEE1588) implementation for Linux
It was discovered that Linux PTP did not properly perform a length check
when forwarding a PTP message between ports. A remote attacker could
possibly use this issue to access sensitive information, execute
arbitrary code, or cause a denial of service.
The problem can be corrected by updating your system to the following
Ubuntu 20.04 LTS:
Ubuntu 18.04 LTS:
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
In general, a standard system update will make all the necessary changes.
A Linux PTP security update has been released for Ubuntu Linux 16.04 LTS, 18.04 LTS, and 20.04 LTS.