Insyde's Security Pledge
Recent Security Advisories

INSYDE-SA-2022050
Product
CVSS Score
Original Date
Last Revised
InsydeH2O
7.8
2022-11-08
Summary
DMA transactions which are targeted at input buffers used for the SdHostDriver software SMI handler could cause SMRAM corruption through a TOCTOU attack.
Vulnerability Details
CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
DMA transactions which are targeted at input buffers used for the software SMI handler used by the SdHostDriver driver could cause SMRAM corruption through a TOCTOU attack. This issue was discovered by Insyde engineering based on the general description provided by Intel’s iSTARE group. Fixed in:
Solution Information
Kernel 5.2: 05.27.25
Kernel 5.3: 05.36.25
Kernel 5.4: 05.44.25
Kernel 5.5: 05.52.25
Acknowledgements
Revision History
Revision #
Date
Description
1
2022-11-08
Initial Release