Insyde's Security Pledge
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 |
Summary:
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
Acknowledgements
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 |
| -- | -- | -- |