nvd-json-data-feeds/CVE-2022/CVE-2022-496xx/CVE-2022-49622.json

{
  "id": "CVE-2022-49622",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-02-26T07:01:37.580",
  "lastModified": "2025-02-27T19:15:45.707",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: avoid skb access on nf_stolen\n\nWhen verdict is NF_STOLEN, the skb might have been freed.\n\nWhen tracing is enabled, this can result in a use-after-free:\n1. access to skb->nf_trace\n2. access to skb->mark\n3. computation of trace id\n4. dump of packet payload\n\nTo avoid 1, keep a cached copy of skb->nf_trace in the\ntrace state struct.\nRefresh this copy whenever verdict is != STOLEN.\n\nAvoid 2 by skipping skb->mark access if verdict is STOLEN.\n\n3 is avoided by precomputing the trace id.\n\nOnly dump the packet when verdict is not \"STOLEN\"."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: nf_tables: evitar el acceso a skb en nf_stolen Cuando el veredicto es NF_STOLEN, es posible que se haya liberado el skb. Cuando el rastreo est\u00e1 habilitado, esto puede dar como resultado un use-after-free: 1. acceso a skb->nf_trace 2. acceso a skb->mark 3. c\u00e1lculo del identificador de rastreo 4. volcado de el payload del paquete Para evitar 1, mantenga una copia en cach\u00e9 de skb->nf_trace en la estructura de estado de rastreo. Actualice esta copia siempre que el veredicto sea != STOLEN. Evite 2 omitiendo el acceso a skb->mark si el veredicto es STOLEN. 3 se evita precalculando el identificador de rastreo. Solo vuelque el paquete cuando el veredicto no sea \"STOLEN\"."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0016d5d46d7440729a3132f61a8da3bf7f84e2ba",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e34b9ed96ce3b06c79bf884009b16961ca478f87",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}