5.5

CVE-2025-21894: net: enetc: VFs do not support HWTSTAMP_TX_ONESTEP_SYNC

Modified
AliasesUBUNTU-CVE-2025-21894DEBIAN-CVE-2025-21894
Published 01-04-2025Last modified 30-10-2026

Vulnerability summary

CVE-2025-21894 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 28 · Related 28
SUSE-SU-2025:01614-1SUSE-SU-2025:01707-1SUSE-SU-2025:01919-1SUSE-SU-2025:01951-1SUSE-SU-2025:01964-1SUSE-SU-2025:01967-1

Timeline

  1. 01-04-2025
    PublishedVulnerability first disclosed.
  2. 30-10-2026
    Last modifiedVulnerability information updated.

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

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.20% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu134 products
  • linuxAll versions (No fix recorded) | < 6.8.0-84.84
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1039.41
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 41514737ecaa603a5127cdccdc5f17ef11b9b3dc, < 3ad5fe77e477a8652c535b3a0343cf3d9ee10056 | ≥ 41514737ecaa603a5127cdccdc5f17ef11b9b3dc, < 1748531839298ab7be682155f6cd98ae04773e6a | ≥ 41514737ecaa603a5127cdccdc5f17ef11b9b3dc, < 3d9634211121700568d0e3635ebdd5df06d20440 | ≥ 41514737ecaa603a5127cdccdc5f17ef11b9b3dc, < 8c393efd7420cc994864d059fcc6219bfd7cb840 | ≥ 41514737ecaa603a5127cdccdc5f17ef11b9b3dc, < a562d0c4a893eae3ea51d512c4d90ab858a6b7ec | 5.3
  • linux_kernel≥ 5.3, < 6.6.83 | ≥ 6.7, < 6.12.18 | ≥ 6.13, < 6.13.6 | 6.14:rc1 | 6.14:rc2 | 6.14:rc3 | 6.14:rc4
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.19-1

3 vendors · 137 products

References

27 links
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