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Back to active CVEs
Medium · CVSS 5.5CVE-2025-21894

net: enetc: VFs do not support HWTSTAMP_TX_ONESTEP_SYNCCVE-2025-21894

Answer in brief

CVE-2025-21894 records a Medium severity (CVSS 5.5) vulnerability in net: enetc: VFs do not support HWTSTAMP_TX_ONESTEP_SYNC. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Apr 1, 2025Updated Oct 30, 2026Source checked Oct 30, 2026First seen by HOL Oct 30, 2026Material review Oct 30, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.5
Exploitation
Not marked as known exploited
Affected software
7 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=41514737ecaa603a5127cdccdc5f17ef11b9b3dc <3ad5fe77e477a8652c535b3a0343cf3d9ee10056 || >=41514737ecaa603a5127cdccdc5f17ef11b9b3dc <1748531839298ab7be682155f6cd98ae04773e6a || >=41514737ecaa603a5127cdccdc5f17ef11b9b3dc <3d9634211121700568d0e3635ebdd5df06d20440 || >=41514737ecaa603a5127cdccdc5f17ef11b9b3dc <8c393efd7420cc994864d059fcc6219bfd7cb840 || >=41514737ecaa603a5127cdccdc5f17ef11b9b3dc <a562d0c4a893eae3ea51d512c4d90ab858a6b7ec3ad5fe77e477a8652c535b3a0343cf3d9ee10056, 1748531839298ab7be682155f6cd98ae04773e6a, 3d9634211121700568d0e3635ebdd5df06d20440, 8c393efd7420cc994864d059fcc6219bfd7cb840, a562d0c4a893eae3ea51d512c4d90ab858a6b7ec
Linux/Linuxgeneric5.3Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 3ad5fe77e477a8652c535b3a0343cf3d9ee10056 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Apr 1, 2025

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 30, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: net: enetc: VFs do not support HWTSTAMP_TX_ONESTEP_SYNC Actually ENETC VFs do not support HWTSTAMP_TX_ONESTEP_SYNC because only ENETC PF can access PMa_SINGLE_STEP registers. And there will be a crash if VFs are used to test one-step timestamp, the crash log as follows. [ 129.110909] Unable to handle kernel paging request at virtual address 00000000000080c0 [ 129.287769] Call trace: [ 129.290219] enetc_port_mac_wr+0x30/0xec (P) [ 129.294504] enetc_start_xmit+0xda4/0xe74 [ 129.298525] enetc_xmit+0x70/0xec [ 129.301848] dev_hard_start_xmit+0x98/0x118

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
NVD-CWE-noinfo
Source
CVE List V5
Source checked
Oct 30, 2026
References
5 linked sources
Open source record