CVE-2025-21814

MEDIUM

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 v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Published: 2/27/2025Modified: 7/14/2026

Related Intelligence (1)

CRITICALAi

Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP

<p><a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-209-04.json"><strong>View CSAF</strong></a></p> <h2>Summary</h2> <p><strong>Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.6 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). Siemens is preparing fix versions and recommend

CVE-2021-41617CVE-2023-28531
CISA Advisories

References (12)

https://git.kernel.org/stable/c/1334c64a5d1de6666e0c9f984db6745083df1eb4https://git.kernel.org/stable/c/5d1041c76de656f9f8d5a192218039a9acf9bd00Patchhttps://git.kernel.org/stable/c/755caf4ee1c615ee5717862e427124370f46b1f3Patchhttps://git.kernel.org/stable/c/81846070cba17125a866e8023c01d3465b153339Patchhttps://git.kernel.org/stable/c/8441aea46445252df5d2eed6deb6d5246fc24002Patchhttps://git.kernel.org/stable/c/9df3a9284f39bfd51a9f72a6a165c79e2aa5066bhttps://git.kernel.org/stable/c/fd53aa40e65f518453115b6f56183b0c201db26bPatchhttps://git.kernel.org/stable/c/fdc1e72487781dd7705bcbe30878bee7d5d1f3e8https://lists.debian.org/debian-lts-announce/2025/03/msg00028.htmlhttps://lists.debian.org/debian-lts-announce/2025/05/msg00030.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-265688.html