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.
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Thu, 20 Mar 2025 14:15:00 +0000
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2025-03-20T13:52:00.439Z
Reserved: 2022-06-10T00:00:00.000Z
Link: CVE-2022-32954

Updated: 2024-08-03T07:54:03.405Z

Status : Modified
Published: 2023-02-15T02:15:09.883
Modified: 2025-03-20T14:15:15.620
Link: CVE-2022-32954

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