{
  "id": "CVE-2022-4696",
  "sourceIdentifier": "cve-coordination@google.com",
  "published": "2023-01-11T13:15:09.307",
  "lastModified": "2024-11-21T07:35:45.190",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "There exists a use-after-free vulnerability in the Linux kernel through io_uring and the\u00a0IORING_OP_SPLICE operation. If\u00a0IORING_OP_SPLICE is\u00a0missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above\n"
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de use-after-free en el kernel de Linux a trav\u00e9s de io_uring y la operaci\u00f3n IORING_OP_SPLICE. Si a IORING_OP_SPLICE le falta el indicador IO_WQ_WORK_FILES, que indica que la operaci\u00f3n no utilizar\u00e1 current->nsproxy, por lo que su contador de referencia no aumenta. Esta suposici\u00f3n no siempre es cierta, ya que llamar a io_splice en archivos espec\u00edficos llamar\u00e1 a la funci\u00f3n get_uts, que utilizar\u00e1 current->nsproxy, lo que provocar\u00e1 una disminuci\u00f3n no v\u00e1lida de su contador de referencia y luego provocar\u00e1 la vulnerabilidad de use-after-free. Recomendamos actualizar a la versi\u00f3n 5.10.160 o superior"
    }
  ],
  "metrics": {
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        "type": "Secondary",
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          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
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        "exploitabilityScore": 1.8,
        "impactScore": 5.9
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          "scope": "UNCHANGED",
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  "weaknesses": [
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      "source": "cve-coordination@google.com",
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  "references": [
    {
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61a",
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