CVE-2025-38054 (GCVE-0-2025-38054)
Vulnerability from cvelistv5
Published
2025-06-18 09:33
Modified
2025-06-18 09:33
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9
Version: ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9
Version: ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/ptp/ptp_ocp.c"
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          "vendor": "Linux",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.12.31",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.14.9",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T09:33:34.686Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0b7d3e782027ac3b6fec56159e8e348042000aef"
        },
        {
          "url": "https://git.kernel.org/stable/c/fcad74f894ac89790084cc2e1ec61b08220941d1"
        },
        {
          "url": "https://git.kernel.org/stable/c/c9e455581e2ba87ee38c126e8dc49a424b9df0cf"
        }
      ],
      "title": "ptp: ocp: Limit signal/freq counts in summary output functions",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38054",
    "datePublished": "2025-06-18T09:33:34.686Z",
    "dateReserved": "2025-04-16T04:51:23.979Z",
    "dateUpdated": "2025-06-18T09:33:34.686Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38054\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-06-18T10:15:38.083\",\"lastModified\":\"2025-06-18T13:46:52.973\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ptp: ocp: Limitar el conteo de se\u00f1ales/frecuencias en las funciones de salida de resumen. La salida de resumen de debugfs podr\u00eda acceder a elementos no inicializados en las matrices freq_in[] y signal_out[], lo que causa desreferencias de punteros nulos y desencadena un error de kernel (page_fault_oops). Este parche agrega campos u8 (nr_freq_in, nr_signal_out) para rastrear el n\u00famero de elementos inicializados, con un m\u00e1ximo de 4 por matriz. Las funciones de salida de resumen se actualizan para respetar estos l\u00edmites, lo que evita el acceso fuera de los l\u00edmites y garantiza el manejo seguro de la matriz. Ampl\u00ede las variables de etiqueta porque el cambio confunde a GCC sobre la longitud m\u00e1xima de las cadenas.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0b7d3e782027ac3b6fec56159e8e348042000aef\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c9e455581e2ba87ee38c126e8dc49a424b9df0cf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fcad74f894ac89790084cc2e1ec61b08220941d1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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