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CVE-2025-38570

Estado: ModificadaAlta (7.8)—

In the Linux kernel, the following vulnerability has been resolved:

eth: fbnic: unlink NAPIs from queues on error to open

CI hit a UaF in fbnic in the AF_XDP portion of the queues.py test. The UaF is in the __sk_mark_napi_id_once() call in xsk_bind(), NAPI has been freed. Looks like the device failed to open earlier, and we lack clearing the NAPI pointer from the queue.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

CVE-2025-38570: Acceso local (AV:L) con privilegios bajos (PR:L) sin interacción permite escalada de privilegios mediante UaF. Ejecución de código como impacto probable.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationBehavior Prevention on Endpoint

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-38570",
  "cveTags": [],
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          "vendor": "Linux",
          "product": "Linux",
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          "programFiles": [
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  "published": "2025-08-19T17:15:33.810",
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      "url": "https://git.kernel.org/stable/c/21d3f8441c7f317b93ba6a8029610c8b7e3773db",
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      "description": [
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          "value": "CWE-416"
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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\neth: fbnic: unlink NAPIs from queues on error to open\n\nCI hit a UaF in fbnic in the AF_XDP portion of the queues.py test.\nThe UaF is in the __sk_mark_napi_id_once() call in xsk_bind(),\nNAPI has been freed. Looks like the device failed to open earlier,\nand we lack clearing the NAPI pointer from the queue."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: eth: fbnic: al desvincular NAPIs de las colas en caso de error al abrir CI, se encontró una UaF en fbnic en la sección AF_XDP de la prueba queues.py. La UaF se encuentra en la llamada __sk_mark_napi_id_once() en xsk_bind(); la NAPI se ha liberado. Parece que el dispositivo no se abrió previamente y nos falta borrar el puntero NAPI de la cola."
    }
  ],
  "lastModified": "2026-07-30T06:23:27.127",
  "configurations": [
    {
      "nodes": [
        {
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              "versionEndExcluding": "6.15.10",
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          "operator": "OR"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}