fkie_cve-2025-38054
Vulnerability from fkie_nvd
Published
2025-06-18 10:15
Modified
2025-06-18 13:46
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0b7d3e782027ac3b6fec56159e8e348042000aef
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c9e455581e2ba87ee38c126e8dc49a424b9df0cf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fcad74f894ac89790084cc2e1ec61b08220941d1
Impacted products
Vendor Product Version


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{
  "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."
    }
  ],
  "id": "CVE-2025-38054",
  "lastModified": "2025-06-18T13:46:52.973",
  "metrics": {},
  "published": "2025-06-18T10:15:38.083",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "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"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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