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CVE-2024-57932

Estado: ModificadaMedia (5.5)—

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

gve: guard XDP xmit NDO on existence of xdp queues

In GVE, dedicated XDP queues only exist when an XDP program is installed and the interface is up. As such, the NDO XDP XMIT callback should return early if either of these conditions are false.

In the case of no loaded XDP program, priv->num_xdp_queues=0 which can cause a divide-by-zero error, and in the case of interface down, num_xdp_queues remains untouched to persist XDP queue count for the next interface up, but the TX pointer itself would be NULL.

The XDP xmit callback also needs to synchronize with a device transitioning from open to close.

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This synchronization will happen via the GVE_PRIV_FLAGS_NAPI_ENABLED bit along with a synchronize_net() call, which waits for any RCU critical sections at call-time to complete.

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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  "id": "CVE-2024-57932",
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          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngve: guard XDP xmit NDO on existence of xdp queues\n\nIn GVE, dedicated XDP queues only exist when an XDP program is installed\nand the interface is up. As such, the NDO XDP XMIT callback should\nreturn early if either of these conditions are false.\n\nIn the case of no loaded XDP program, priv->num_xdp_queues=0 which can\ncause a divide-by-zero error, and in the case of interface down,\nnum_xdp_queues remains untouched to persist XDP queue count for the next\ninterface up, but the TX pointer itself would be NULL.\n\nThe XDP xmit callback also needs to synchronize with a device\ntransitioning from open to close. This synchronization will happen via\nthe GVE_PRIV_FLAGS_NAPI_ENABLED bit along with a synchronize_net() call,\nwhich waits for any RCU critical sections at call-time to complete."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: gve: guard XDP xmit NDO on existing xdp queues En GVE, las colas XDP dedicadas solo existen cuando se instala un programa XDP y la interfaz está activa. Como tal, la devolución de llamada NDO XDP XMIT debe regresar temprano si alguna de estas condiciones es falsa. En el caso de que no haya un programa XDP cargado, priv->num_xdp_queues=0 que puede causar un error de división por cero, y en el caso de que la interfaz esté inactiva, num_xdp_queues permanece intacto para persistir el conteo de colas XDP para la siguiente interfaz activa, pero el puntero TX en sí sería NULL. La devolución de llamada XDP xmit también necesita sincronizarse con un dispositivo que esté pasando de abierto a cerrado. Esta sincronización ocurrirá a través del bit GVE_PRIV_FLAGS_NAPI_ENABLED junto con una llamadasynchronous_net(), que espera a que se completen las secciones críticas de RCU en el momento de la llamada."
    }
  ],
  "lastModified": "2026-08-04T11:22:32.273",
  "configurations": [
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