{"id":"CVE-2025-21894","title":"net: enetc: VFs do not support HWTSTAMP_TX_ONESTEP_SYNC","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: enetc: VFs do not support HWTSTAMP_TX_ONESTEP_SYNC\n\nActually ENETC VFs do not support HWTSTAMP_TX_ONESTEP_SYNC because only\nENETC PF can access PMa_SINGLE_STEP reg…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 41514737ecaa603a5127cdccdc5f17ef11b9b3dc < 3ad5fe77e477a8652c535b3a0343cf3d9ee10056","Linux >= 41514737ecaa603a5127cdccdc5f17ef11b9b3dc < 1748531839298ab7be682155f6cd98ae04773e6a","Linux >= 41514737ecaa603a5127cdccdc5f17ef11b9b3dc < 3d9634211121700568d0e3635ebdd5df06d20440","Linux >= 41514737ecaa603a5127cdccdc5f17ef11b9b3dc < 8c393efd7420cc994864d059fcc6219bfd7cb840","Linux >= 41514737ecaa603a5127cdccdc5f17ef11b9b3dc < a562d0c4a893eae3ea51d512c4d90ab858a6b7ec","Linux 5.3"],"published":"2025-04-01","updated":"2026-10-30","sourceUpdated":"2026-10-30T12:20:59.672Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-21894","references":[{"url":"https://git.kernel.org/stable/c/3ad5fe77e477a8652c535b3a0343cf3d9ee10056"},{"url":"https://git.kernel.org/stable/c/1748531839298ab7be682155f6cd98ae04773e6a"},{"url":"https://git.kernel.org/stable/c/3d9634211121700568d0e3635ebdd5df06d20440"},{"url":"https://git.kernel.org/stable/c/8c393efd7420cc994864d059fcc6219bfd7cb840"},{"url":"https://git.kernel.org/stable/c/a562d0c4a893eae3ea51d512c4d90ab858a6b7ec"}],"tags":["cve.org"],"epss":0.00207,"epssPercentile":0.1085,"ingestedAt":"2026-11-03T16:49:26.494Z","slug":"CVE-2025-21894","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: enetc: VFs do not support HWTSTAMP_TX_ONESTEP_SYNC\n\nActually ENETC VFs do not support HWTSTAMP_TX_ONESTEP_SYNC because only\nENETC PF can access PMa_SINGLE_STEP registers. And there will be a crash\nif VFs are used to test one-step timestamp, the crash log as follows.\n\n[  129.110909] Unable to handle kernel paging request at virtual address 00000000000080c0\n[  129.287769] Call trace:\n[  129.290219]  enetc_port_mac_wr+0x30/0xec (P)\n[  129.294504]  enetc_start_xmit+0xda4/0xe74\n[  129.298525]  enetc_xmit+0x70/0xec\n[  129.301848]  dev_hard_start_xmit+0x98/0x118\n\n## Affected\n\n- `Linux >= 41514737ecaa603a5127cdccdc5f17ef11b9b3dc < 3ad5fe77e477a8652c535b3a0343cf3d9ee10056`\n- `Linux >= 41514737ecaa603a5127cdccdc5f17ef11b9b3dc < 1748531839298ab7be682155f6cd98ae04773e6a`\n- `Linux >= 41514737ecaa603a5127cdccdc5f17ef11b9b3dc < 3d9634211121700568d0e3635ebdd5df06d20440`\n- `Linux >= 41514737ecaa603a5127cdccdc5f17ef11b9b3dc < 8c393efd7420cc994864d059fcc6219bfd7cb840`\n- `Linux >= 41514737ecaa603a5127cdccdc5f17ef11b9b3dc < a562d0c4a893eae3ea51d512c4d90ab858a6b7ec`\n- `Linux 5.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}