Description
An issue was discovered in Kernel 5.x in Insyde InsydeH2O, affecting HddPassword. Software SMI services that use the Communicate() function of the EFI_SMM_COMMUNICATION_PROTOCOL do not check whether the address of the buffer is valid, which allows use of SMRAM, MMIO, or OS kernel addresses.
Advisories 2
- WID-SEC-2022-2136 Lenovo BIOS: Mehrere Schwachstellen ermöglichen Privilegieneskalation BSI CERT-Bund (WID) · Oct 28, 2026
- SSA-306654 SSA-306654: Insyde BIOS Vulnerabilities in Siemens Industrial Products Siemens ProductCERT · Aug 11, 2026