CVE-2025-21822 Information

Description

In the Linux kernel the following vulnerability has been resolved:

ptp: vmclock: Set driver data before its usage

If vmclock_ptp_register() fails during probing vmclock_remove() is called to clean up the ptp clock and misc device. It uses dev_get_drvdata() to access the vmclock state. However the driver data is not yet set at this point.

Assign the driver data earlier.

Reference

https://git.kernel.org/stable/c/6dbd8b91a065d1d8001446a28e72cd140f9acef0 https://git.kernel.org/stable/c/f7d07cd4f77d77f366c8ffbb8ba8b61f614e5fce