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CVE-2025-21659

Estado: ModificadaMedia (5.5)—

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

netdev: prevent accessing NAPI instances from another namespace

The NAPI IDs were not fully exposed to user space prior to the netlink API, so they were never namespaced. The netlink API must ensure that at the very least NAPI instance belongs to the same netns as the owner of the genl sock.

napi_by_id() can become static now, but it needs to move because of dev_get_by_napi_id().

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).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "published": "2025-01-21T13:15:09.540",
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetdev: prevent accessing NAPI instances from another namespace\n\nThe NAPI IDs were not fully exposed to user space prior to the netlink\nAPI, so they were never namespaced. The netlink API must ensure that\nat the very least NAPI instance belongs to the same netns as the owner\nof the genl sock.\n\nnapi_by_id() can become static now, but it needs to move because of\ndev_get_by_napi_id()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netdev: evitar el acceso a instancias NAPI desde otro espacio de nombres Los identificadores NAPI no estaban completamente expuestos al espacio de usuario antes de la API netlink, por lo que nunca se asignaron espacios de nombres. La API netlink debe garantizar que, como mínimo, la instancia NAPI pertenezca a la misma red que el propietario del calcetín genl. napi_by_id() ahora puede volverse estático, pero debe moverse debido a dev_get_by_napi_id(). "
    }
  ],
  "lastModified": "2026-07-30T06:17:41.663",
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