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CVE-2022-32476

Estado: ModificadaAlta (7)—

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the AhciBusDxe shared buffer used by SMM and non-SMM code could cause TOCTOU race-condition issues that could lead to corruption of SMRAM and escalation of privileges. This attack can be mitigated using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the firmware block services data to SMRAM before checking it.

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 — Insydeh2o

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2022-32476",
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
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            {
              "automatable": "no"
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            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2025-03-20T13:39:58.627001Z"
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      "value": "An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the AhciBusDxe shared buffer used by SMM and non-SMM code could cause TOCTOU race-condition issues that could lead to corruption of SMRAM and escalation of privileges. This attack can be mitigated using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the firmware block services data to SMRAM before checking it."
    },
    {
      "lang": "es",
      "value": "Se descubrió un problema en Insyde InsydeH2O con los kernels 5.0 a 5.5. Los ataques de DMA al búfer compartido AhciBusDxe utilizado por el código SMM y no SMM podrían causar problemas de condiciones de ejecución de TOCTOU que podrían conducir a la corrupción de SMRAM y a una escalada de privilegios. Este ataque se puede mitigar utilizando la protección IOMMU para la memoria de ejecución ACPI utilizada para el búfer de comandos. Este ataque se puede mitigar copiando los datos de los servicios del bloque de firmware en SMRAM antes de verificarlos."
    }
  ],
  "lastModified": "2026-06-17T04:47:20.163",
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