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.

Classification

CVE ID: CVE-2025-21822

Affected Products

Vendor: Linux, Linux

Product: Linux, Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 3.7% (scored less or equal to compared to others)

EPSS Date: 2025-03-28 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-21822
https://git.kernel.org/stable/c/6dbd8b91a065d1d8001446a28e72cd140f9acef0
https://git.kernel.org/stable/c/f7d07cd4f77d77f366c8ffbb8ba8b61f614e5fce

Timeline