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Linux Kernel PTP VMCLOCK Unloading Vulnerability

Vulnerability

A vulnerability in the Linux kernel's Precision Time Protocol (PTP) implementation related to virtual machine clock management has been addressed. The issue arose because the vmclock_miscdev_fops lacked an owner field, allowing the module to be unloaded while /dev/vmclock0 was in use. This could lead to a system error (oops) by disrupting a live operation.

Impact

The vulnerability could cause a system error (oops) by allowing the module to be unloaded while it was still in use, potentially leading to instability or a crash.

Added: Jun 9, 2025, 7:46 PM
Updated: Jun 9, 2025, 7:46 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
3.5
remediation
0.0
relevance
0.0
threat
3.2
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.