{
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    {
      "nodes": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "6.5",
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              "vulnerable": true
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: Fix using rcu_read_(un)lock while iterating\n\nThe usage of rcu_read_(un)lock while inside list_for_each_entry_rcu is\nnot safe since for the most part entries fetched this way shall be\ntreated as rcu_dereference:\n\n\tNote that the value returned by rcu_dereference() is valid\n\tonly within the enclosing RCU read-side critical section [1]_.\n\tFor example, the following is **not** legal::\n\n\t\trcu_read_lock();\n\t\tp = rcu_dereference(head.next);\n\t\trcu_read_unlock();\n\t\tx = p-\u003eaddress;\t/* BUG!!! */\n\t\trcu_read_lock();\n\t\ty = p-\u003edata;\t/* BUG!!! */\n\t\trcu_read_unlock();"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: hci_event: Se solucion\u00f3 el uso de rcu_read_(un)lock durante la iteraci\u00f3n El uso de rcu_read_(un)lock mientras se est\u00e1 dentro de list_for_each_entry_rcu no es seguro ya que en la mayor parte de los casos las entradas obtenidas de esta manera se tratar\u00e1n como rcu_dereference: Tenga en cuenta que el valor devuelto por rcu_dereference() solo es v\u00e1lido dentro de la secci\u00f3n cr\u00edtica del lado de lectura de RCU [1]_. Por ejemplo, lo siguiente **no** es legal:: rcu_read_lock(); p = rcu_dereference(head.next); rcu_read_unlock(); x = p-\u0026gt;address; /* \u00a1ERROR! */ rcu_read_lock(); y = p-\u0026gt;data; /* \u00a1ERROR! */ rcu_read_unlock();"
    }
  ],
  "id": "CVE-2024-56654",
  "lastModified": "2025-01-06T22:33:09.937",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-12-27T15:15:25.237",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0108132d7d76d884e443d18b4f067cdf2811911b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/581dd2dc168fe0ed2a7a5534a724f0d3751c93ae"
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      "url": "https://git.kernel.org/stable/c/f9ecc90b5d501b3a5a62d0685d5104f934bb0104"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}