nvd-json-data-feeds/CVE-2022/CVE-2022-490xx/CVE-2022-49030.json

{
  "id": "CVE-2022-49030",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-10-21T20:15:13.747",
  "lastModified": "2024-10-24T18:42:07.703",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibbpf: Handle size overflow for ringbuf mmap\n\nThe maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries\nwill overflow u32 when mapping producer page and data pages. Only\ncasting max_entries to size_t is not enough, because for 32-bits\napplication on 64-bits kernel the size of read-only mmap region\nalso could overflow size_t.\n\nSo fixing it by casting the size of read-only mmap region into a __u64\nand checking whether or not there will be overflow during mmap."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: libbpf: desbordamiento de tama\u00f1o del controlador para ringbuf mmap El tama\u00f1o m\u00e1ximo de ringbuf es de 2 GB en un host x86-64, por lo que 2 * max_entries desbordar\u00e1n u32 al asignar la p\u00e1gina del productor y las p\u00e1ginas de datos. Solo convertir max_entries a size_t no es suficiente, porque para la aplicaci\u00f3n de 32 bits en un kernel de 64 bits, el tama\u00f1o de la regi\u00f3n mmap de solo lectura tambi\u00e9n podr\u00eda desbordar size_t. Entonces, arr\u00e9glelo convirtiendo el tama\u00f1o de la regi\u00f3n mmap de solo lectura en __u64 y verificando si habr\u00e1 o no desbordamiento durante mmap."
    }
  ],
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        "type": "Primary",
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          "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"
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        "exploitabilityScore": 1.8,
        "impactScore": 5.9
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          "value": "CWE-190"
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