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CVE-2022-33986

Estado: ModificadaMedia (6.4)—

DMA attacks on the parameter buffer used by the VariableRuntimeDxe software SMI handler could lead to a TOCTOU attack. DMA attacks on the parameter buffer used by the software SMI handler used by the driver VariableRuntimeDxe could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM. This issue was discovered by Insyde engineering during a security review. This issue is fixed in Kernel 5.4: 05.44.23 and Kernel 5.5: 05.52.23. CWE-367 CWE-367 Report at: https://www.insyde.com/security-pledge/SA-2022056

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 (1)

Insyde — Kernel

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2022-33986",
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2025-04-30T19:56:10.571518Z"
        }
      }
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    "cvssMetricV31": [
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        "source": "nvd@nist.gov",
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          "attackVector": "LOCAL",
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          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
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          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
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  "published": "2022-11-15T00:15:12.353",
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  "vulnStatus": "Modified",
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  "descriptions": [
    {
      "lang": "en",
      "value": "DMA attacks on the parameter buffer used by the VariableRuntimeDxe software SMI handler could lead to a TOCTOU attack. DMA attacks on the parameter buffer used by the software SMI handler used by the driver VariableRuntimeDxe could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM. This issue was discovered by Insyde engineering during a security review. This issue is fixed in Kernel 5.4: 05.44.23 and Kernel 5.5: 05.52.23. CWE-367 CWE-367 Report at: https://www.insyde.com/security-pledge/SA-2022056"
    },
    {
      "lang": "es",
      "value": "Los ataques DMA al búfer de parámetros utilizado por el controlador SMI del software VariableRuntimeDxe podrían provocar un ataque TOCTOU. Los ataques DMA al búfer de parámetros utilizado por el controlador SMI de software utilizado por el controlador VariableRuntimeDxe podrían provocar un ataque TOCTOU al controlador SMI y provocar la corrupción de SMRAM. Este problema fue descubierto por la ingeniería de Insyde durante una revisión de seguridad. Este problema se solucionó en Kernel 5.4: 05.44.23 y Kernel 5.5: 05.52.23. CWE-367 Informe CWE-367 en: https://www.insyde.com/security-pledge/SA-2022056"
    }
  ],
  "lastModified": "2026-06-17T04:49:37.250",
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