{
  "id": "CVE-2024-50145",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-11-07T10:15:06.373",
  "lastModified": "2024-11-15T19:50:44.203",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteon_ep: Add SKB allocation failures handling in __octep_oq_process_rx()\n\nbuild_skb() returns NULL in case of a memory allocation failure so handle\nit inside __octep_oq_process_rx() to avoid NULL pointer dereference.\n\n__octep_oq_process_rx() is called during NAPI polling by the driver. If\nskb allocation fails, keep on pulling packets out of the Rx DMA queue: we\nshouldn't break the polling immediately and thus falsely indicate to the\noctep_napi_poll() that the Rx pressure is going down. As there is no\nassociated skb in this case, don't process the packets and don't push them\nup the network stack - they are skipped.\n\nHelper function is implemented to unmmap/flush all the fragment buffers\nused by the dropped packet. 'alloc_failures' counter is incremented to\nmark the skb allocation error in driver statistics.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: octeon_ep: Agregar manejo de fallas de asignaci\u00f3n de SKB en __octep_oq_process_rx() build_skb() devuelve NULL en caso de una falla de asignaci\u00f3n de memoria, por lo que se maneja dentro de __octep_oq_process_rx() para evitar la desreferencia del puntero NULL. __octep_oq_process_rx() es llamado durante el sondeo NAPI por el controlador. Si la asignaci\u00f3n de skb falla, sigue extrayendo paquetes de la cola DMA de Rx: no deber\u00edamos interrumpir el sondeo inmediatamente y, por lo tanto, indicar falsamente a octep_napi_poll() que la presi\u00f3n de Rx est\u00e1 disminuyendo. Como no hay un skb asociado en este caso, no procesa los paquetes y no los empuja hacia arriba en la pila de red: se omiten. Se implementa una funci\u00f3n auxiliar para desmapear/vaciar todos los buferes de fragmentos utilizados por el paquete descartado. El contador 'alloc_failures' se incrementa para marcar el error de asignaci\u00f3n de skb en las estad\u00edsticas del controlador. Encontrado por Linux Verification Center (linuxtesting.org) con SVACE."
    }
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
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