CVE-2025-21894

net: enetc: VFs do not support HWTSTAMP_TX_ONESTEP_SYNC

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

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/1748531839298ab7be682155f6cd98ae04773e6a
https://git.kernel.org/stable/c/3d9634211121700568d0e3635ebdd5df06d20440
https://git.kernel.org/stable/c/8c393efd7420cc994864d059fcc6219bfd7cb840
https://git.kernel.org/stable/c/a562d0c4a893eae3ea51d512c4d90ab858a6b7ec

Frequently Asked Questions

What is the severity of CVE-2025-21894?: CVE-2025-21894 has not yet been assigned a CVSS score.
How to fix CVE-2025-21894?: To fix CVE-2025-21894, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-21894 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-21894 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-21894?: CVE-2025-21894 affects Linux Linux, Linux Linux.

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