CVE-2025-21894

MEDIUM

Linux Kernel 5.3-6.6.82, 6.7-6.12.17, 6.13-6.13.5 - Denial of Service via ENETC VF HWTSTAMP_TX_ONESTEP_SYNC

Title source: llm
STIX 2.1

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

References (4)

Core 4

Scores

CVSS v3 5.5
EPSS 0.0019
EPSS Percentile 8.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (15)
linux/Kernel 5.3.0 - 6.6.83linux
linux/Kernel 6.13.0 - 6.13.6linux
linux/Kernel 6.7.0 - 6.12.18linux
Linux/Linux < 5.3
Linux/Linux 41514737ecaa603a5127cdccdc5f17ef11b9b3dc - 1748531839298ab7be682155f6cd98ae04773e6a
Linux/Linux 41514737ecaa603a5127cdccdc5f17ef11b9b3dc - 3d9634211121700568d0e3635ebdd5df06d20440
Linux/Linux 41514737ecaa603a5127cdccdc5f17ef11b9b3dc - 8c393efd7420cc994864d059fcc6219bfd7cb840
Linux/Linux 41514737ecaa603a5127cdccdc5f17ef11b9b3dc - a562d0c4a893eae3ea51d512c4d90ab858a6b7ec
Linux/Linux 5.3
Linux/Linux 6.12.18 - 6.12.*
... and 5 more
Published Apr 01, 2025
Tracked Since Feb 18, 2026