An issue was discovered in IhisiSmm in Insyde InsydeH2O...
High severity
Unreviewed
Published
Feb 15, 2023
to the GitHub Advisory Database
•
Updated Mar 3, 2023
Description
Published by the National Vulnerability Database
Feb 15, 2023
Published to the GitHub Advisory Database
Feb 15, 2023
Last updated
Mar 3, 2023
An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. The IhisiDxe driver uses the command buffer to pass input and output data. By modifying the command buffer contents with DMA after the input parameters have been checked but before they are used, the IHISI SMM code may be convinced to modify SMRAM or OS, leading to possible data corruption or escalation of privileges.
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