ghsa-5x4q-vfjh-6h4j
Vulnerability from github
Published
2025-06-18 12:30
Modified
2025-11-14 18:31
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:

ptp: ocp: Limit signal/freq counts in summary output functions

The debugfs summary output could access uninitialized elements in the freq_in[] and signal_out[] arrays, causing NULL pointer dereferences and triggering a kernel Oops (page_fault_oops). This patch adds u8 fields (nr_freq_in, nr_signal_out) to track the number of initialized elements, with a maximum of 4 per array. The summary output functions are updated to respect these limits, preventing out-of-bounds access and ensuring safe array handling.

Widen the label variables because the change confuses GCC about max length of the strings.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38054"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-908"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T10:15:38Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nptp: ocp: Limit signal/freq counts in summary output functions\n\nThe debugfs summary output could access uninitialized elements in\nthe freq_in[] and signal_out[] arrays, causing NULL pointer\ndereferences and triggering a kernel Oops (page_fault_oops).\nThis patch adds u8 fields (nr_freq_in, nr_signal_out) to track the\nnumber of initialized elements, with a maximum of 4 per array.\nThe summary output functions are updated to respect these limits,\npreventing out-of-bounds access and ensuring safe array handling.\n\nWiden the label variables because the change confuses GCC about\nmax length of the strings.",
  "id": "GHSA-5x4q-vfjh-6h4j",
  "modified": "2025-11-14T18:31:22Z",
  "published": "2025-06-18T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38054"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b7d3e782027ac3b6fec56159e8e348042000aef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9e455581e2ba87ee38c126e8dc49a424b9df0cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fcad74f894ac89790084cc2e1ec61b08220941d1"
    }
  ],
  "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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