What’s Vulnerable › Vulnerabilities
CVE-2025-21814: ptp: Ensure info->enable callback is always set
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-02-27 · updated 2026-10-15
- Weakness: CWE-476
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.
Affected products
- Linux kernel: from 3.0 before 6.1.129; from 6.2 before 6.6.78; from 6.7 before 6.12.14; from 6.13 before 6.13.3 — fixed in 6.1.129, 6.12.14, 6.13.3, 6.6.78
How to fix
Upgrade to a fixed version: Linux kernel 6.1.129, 6.12.14, 6.13.3, 6.6.78. Check the vendor advisory for mitigations.
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
- https://git.kernel.org/stable/c/9df3a9284f39bfd51a9f72a6a165c79e2aa5066b
- https://git.kernel.org/stable/c/fd53aa40e65f518453115b6f56183b0c201db26b
- 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
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
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