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CVE-2021-3543

Estado: ModificadaMedia (6.7)—

A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system.

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).

Tecnologías afectadas (3)

Fedoraproject — FedoraNitro Enclaves Project — Nitro EnclavesRedhat — Enterprise Linux

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-3543",
  "cveTags": [],
  "metrics": {
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          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
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          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
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        "obtainAllPrivilege": false,
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  "affected": [
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      "affectedData": [
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    },
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      "lang": "es",
      "value": "Se encontró una fallo desreferencia de puntero null en el controlador Nitro Enclaves kernel en la forma en que las máquinas virtuales de Enclaves fuerzan cierres en el descriptor de archivo del enclave. Un usuario local de una máquina host podría usar este fallo para bloquear el sistema o escalar sus privilegios en el sistema"
    }
  ],
  "lastModified": "2026-06-17T04:05:19.130",
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