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CVE-2021-3543

Status: ModifiedMedium (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

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (3)

Fedoraproject — FedoraNitro Enclaves Project — Nitro EnclavesRedhat — Enterprise Linux

CWEs

References

Raw JSON (NVD)

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  "id": "CVE-2021-3543",
  "cveTags": [],
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          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
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    },
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      "lang": "es",
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    }
  ],
  "lastModified": "2026-06-17T04:05:19.130",
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