Insyde Security Advisory 2023023

Insyde ID Advisory Category Impact of Vulnerability Severity Rating Original Date Last Revised
INSYDE-SA-2023023 Software CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L 7.3 04/10/2023 04/10/2023


IhisiServicesSmm: Write To Attacker Controlled Address.

Vulnerability Details


An attacker could invoke a SMI handler with a malformed pointer in RCX that overlaps SMRAM, resulting in SMM memory corruption.

Kernel 5.2: Version 05.27.37
Kernel 5.3: Version 05.36.37
Kernel 5.4: Version 05.44.45
Kernel 5.5: Version 05.52.45


Insyde Software would like to thank Jeremy Boone (@uffeux) of the NCC Group for reporting the vulnerability and engaging in this coordinated disclosure.

Revision History:

Revision Date Description
1.0 04/10/2023 Initial Release
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