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.
History

Thu, 20 Mar 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-03-20T13:52:00.439Z

Reserved: 2022-06-10T00:00:00.000Z

Link: CVE-2022-32954

cve-icon Vulnrichment

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

cve-icon NVD

Status : Modified

Published: 2023-02-15T02:15:09.883

Modified: 2025-03-20T14:15:15.620

Link: CVE-2022-32954

cve-icon Redhat

No data.