CVE-2025-21814: Linux kernel · ptp: Ensure info->enable callback is always set
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 5 Nov 2026, 23:23 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- EPSS
- 0.2% chance of exploitation in 30 days – higher than 18% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 27 Feb 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
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.
References
- git.kernel.org/stable/c/fdc1e72487781dd7705bcbe30878bee7d5d1f3e8 (opens in a new tab)
- git.kernel.org/stable/c/9df3a9284f39bfd51a9f72a6a165c79e2aa5066b (opens in a new tab)
- git.kernel.org/stable/c/1334c64a5d1de6666e0c9f984db6745083df1eb4 (opens in a new tab)
- git.kernel.org/stable/c/5d1041c76de656f9f8d5a192218039a9acf9bd00 (opens in a new tab)
- git.kernel.org/stable/c/81846070cba17125a866e8023c01d3465b153339 (opens in a new tab)
- git.kernel.org/stable/c/8441aea46445252df5d2eed6deb6d5246fc24002 (opens in a new tab)
- git.kernel.org/stable/c/755caf4ee1c615ee5717862e427124370f46b1f3 (opens in a new tab)
- git.kernel.org/stable/c/fd53aa40e65f518453115b6f56183b0c201db26b (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/05/msg00030.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/03/msg00028.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-265688.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-019113.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-457936.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)