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 v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1334c64a5d1de6666e0c9f984db6745083df1eb4
https://git.kernel.org/stable/c/5d1041c76de656f9f8d5a192218039a9acf9bd00	Patch
https://git.kernel.org/stable/c/755caf4ee1c615ee5717862e427124370f46b1f3	Patch
https://git.kernel.org/stable/c/81846070cba17125a866e8023c01d3465b153339	Patch
https://git.kernel.org/stable/c/8441aea46445252df5d2eed6deb6d5246fc24002	Patch
https://git.kernel.org/stable/c/9df3a9284f39bfd51a9f72a6a165c79e2aa5066b
https://git.kernel.org/stable/c/fd53aa40e65f518453115b6f56183b0c201db26b	Patch
https://git.kernel.org/stable/c/fdc1e72487781dd7705bcbe30878bee7d5d1f3e8
https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2025-02-27 20:16

Updated : 2025-11-03 21:19

NVD link : CVE-2025-21814

Mitre link : CVE-2025-21814

CVE.ORG link : CVE-2025-21814

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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