An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the PnpSmm 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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2023-02-15T00:00:00

Updated: 2024-08-03T07:39:51.071Z

Reserved: 2022-06-06T00:00:00

Link: CVE-2022-32469

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2023-02-15T14:15:11.870

Modified: 2023-02-25T03:26:50.503

Link: CVE-2022-32469

cve-icon Redhat

No data.