Linux Kernel PTP Clock Virtual Clock Unregistration Vulnerability

A vulnerability in the Linux kernel's Precision Time Protocol (PTP) implementation has been addressed. The issue arose when a physical clock was unregistered while still having associated virtual clocks, leading to a page fault error. This problem could be triggered by unloading a driver that provides a PTP clock with active virtual clocks.

Impact

Unloading a PTP driver with active virtual clocks could cause a page fault error, leading to a kernel oops.