Insyde's Security Pledge

Stack buffer overflow vulnerability leads to arbitrary code execution.

CVSS Vector: CVSS3.1:AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

CVE-2022-36337

This issue affects the MebxConfiguration driver of InsydeH2O in releases supporting specific chipsets. The issue was discovered by the Binarly efiXplorer team. This issue is fixed in various InsydeH2O versions, depending on the chipset:

This was fixed in the Kernel, versions:

Ice Lake: Version 05.33.15.0052
Tiger Lake: Version 05.43.12.0054
Alder Lake: Version 05.44.23.0050
Snow Ridge: Version 05.36.26.0053
Denverton: Version 05.10.12.0043
NEX Alder Lake: IB16560316 @ Trunk

All other Intel and all AMD platforms are unaffected.

This issue was described by the Binarly efiXplorer team (https://www.binarly.io/advisories/BRLY-2022-019)