ghsa-m7gq-vr78-836g
Vulnerability from github
Published
2025-04-01 18:30
Modified
2025-10-31 21:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-21894"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-01T16:15:19Z",
    "severity": "MODERATE"
  },
  "details": "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 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",
  "id": "GHSA-m7gq-vr78-836g",
  "modified": "2025-10-31T21:30:52Z",
  "published": "2025-04-01T18:30:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21894"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1748531839298ab7be682155f6cd98ae04773e6a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d9634211121700568d0e3635ebdd5df06d20440"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c393efd7420cc994864d059fcc6219bfd7cb840"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a562d0c4a893eae3ea51d512c4d90ab858a6b7ec"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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