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CVE-2022-32954

Status: ModifiedHigh (7)—

An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 5.5. DMA attacks on the SdMmcDevice 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 by using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the link data to SMRAM before checking it and verifying that all pointers are within the buffer.

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 (1)

Insyde — Insydeh2o

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2022-32954",
  "cveTags": [],
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          "options": [
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              "exploitation": "none"
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              "automatable": "no"
            },
            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2025-03-20T13:51:20.461107Z"
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    {
      "url": "https://www.insyde.com/security-pledge",
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      "value": "An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 5.5. DMA attacks on the SdMmcDevice 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 by using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the link data to SMRAM before checking it and verifying that all pointers are within the buffer."
    },
    {
      "lang": "es",
      "value": "Se descubrió un problema en Insyde InsydeH2O con los kernels 5.1 a 5.5. Los ataques DMA al búfer SdMmcDevice utilizado por 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 mediante el uso de protección IOMMU para la memoria de ejecución ACPI utilizada para el búfer de comandos. Este ataque se puede mitigar copiando los datos del enlace a SMRAM antes de verificarlo y verificar que todos los punteros estén dentro del búfer."
    }
  ],
  "lastModified": "2026-06-17T04:48:17.630",
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