An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the SdHostDriver 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.
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Mon, 05 May 2025 17:15:00 +0000
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Status: PUBLISHED
Assigner: mitre
Published: 2023-02-15T00:00:00.000Z
Updated: 2025-05-05T16:15:15.235Z
Reserved: 2022-06-10T00:00:00.000Z
Link: CVE-2022-32953

Updated: 2024-08-03T07:54:03.426Z

Status : Modified
Published: 2023-02-15T03:15:10.300
Modified: 2025-05-05T17:18:15.660
Link: CVE-2022-32953

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