CVE-2025-21814

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.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 17% of CVEs (scores of 2026-10-25)

CWE

CWE-476

Published

2025-02-27

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/1334c64a5d1de6666e0c9f984db6745083df1eb4
• https://git.kernel.org/stable/c/5d1041c76de656f9f8d5a192218039a9acf9bd00
• https://git.kernel.org/stable/c/755caf4ee1c615ee5717862e427124370f46b1f3
• https://git.kernel.org/stable/c/81846070cba17125a866e8023c01d3465b153339
• https://git.kernel.org/stable/c/8441aea46445252df5d2eed6deb6d5246fc24002

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