CVE-2022-32474: High severity insyde h2o vulnerability
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the StorageSecurityCommandDxe 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.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID for this issue in Insyde InsydeH2O?
The vulnerability ID for this issue in Insyde InsydeH2O is CVE-2022-32474.
What is the severity level of CVE-2022-32474?
The severity level of CVE-2022-32474 is high (7).
How does this vulnerability impact Insyde InsydeH2O?
This vulnerability in Insyde InsydeH2O allows DMA attacks on the StorageSecurityCommandDxe shared buffer, which could lead to corruption of SMRAM and escalation of privileges.
Which versions of Insyde InsydeH2O are affected by CVE-2022-32474?
Insyde InsydeH2O versions 5.0 through 5.5 are affected by CVE-2022-32474.
How can I mitigate the risk of CVE-2022-32474?
To mitigate the risk of CVE-2022-32474, follow the recommendations provided by Insyde in their security pledge.