Description
An issue was discovered in AhciBusDxe in Insyde InsydeH2O with kernel 5.1 through 5.5. An SMM memory corruption vulnerability allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
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