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CVE-2022-50147

Estado: AnalizadaAlta (7.1)—

In the Linux kernel, the following vulnerability has been resolved:

mm/mempolicy: fix get_nodes out of bound access

When user specified more nodes than supported, get_nodes will access nmask array out of bounds.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:L, PR:L, UI:N indica escalada local sin interacción (T1068). Out-of-bounds en kernel puede lograr ejecución de código o DoS; el acceso de lectura/escritura fuera de límites en mempolicy típicamente permite ambos.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationFilter Network Traffic

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2022-50147",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "version": "3.1",
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          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "LOW",
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        "exploitabilityScore": 1.8
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          "vendor": "Linux",
          "product": "Linux",
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            {
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              "version": "5.15"
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              "lessThanOrEqual": "*"
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          ],
          "programFiles": [
            "mm/mempolicy.c"
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      ]
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  ],
  "published": "2025-06-18T11:15:44.743",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/000eca5d044d1ee23b4ca311793cf3fc528da6c6",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/44652154484e7e3d12008802cfb6c28a8aa16d85",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
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      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
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      "url": "https://git.kernel.org/stable/c/d1b5113674c3e95bb53c601ce2ea4719e851c74d",
      "tags": [
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      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mempolicy: fix get_nodes out of bound access\n\nWhen user specified more nodes than supported, get_nodes will access nmask\narray out of bounds."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/mempolicy: corrige el acceso fuera de los límites a get_nodes. Cuando el usuario especifica más nodos de los admitidos, get_nodes accederá a la matriz nmask fuera de los límites."
    }
  ],
  "lastModified": "2026-06-17T05:22:51.340",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "5.15.61",
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            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "5.18.18",
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            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}