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CVE-2025-21814 – Linux PTP NULL Pointer Dereference Vulnerability

The following table lists the changes that have been made to the
CVE-2025-21814 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Feb. 27, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved:

    ptp: Ensure info->enable callback is always set

    The ioctl and sysfs handlers unconditionally call the ->enable callback.
    Not all drivers implement that callback, leading to NULL dereferences.
    Example of affected drivers: ptp_s390.c, ptp_vclock.c and ptp_mock.c.

    Instead use a dummy callback if no better was specified by the driver.
    Added Reference https://git.kernel.org/stable/c/5d1041c76de656f9f8d5a192218039a9acf9bd00
    Added Reference https://git.kernel.org/stable/c/755caf4ee1c615ee5717862e427124370f46b1f3
    Added Reference https://git.kernel.org/stable/c/81846070cba17125a866e8023c01d3465b153339
    Added Reference https://git.kernel.org/stable/c/8441aea46445252df5d2eed6deb6d5246fc24002
    Added Reference https://git.kernel.org/stable/c/fd53aa40e65f518453115b6f56183b0c201db26b
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