Insyde's Security Pledge

DMA transactions which are targeted at input buffers used for the software SMI handler used by the FvbServicesRuntimeDxe driver could cause SMRAM corruption (a TOCTOU attack).

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CVE-2022-31243

DMA transactions which are targeted at input buffers used for the software SMI handler used by the FvbServicesRuntimeDxe driver could cause SMRAM corruption. This issue was discovered by Insyde engineering based on the general description provided by Intel’s iSTARE group.

Kernel 5.2: 05.27.21
Kernel 5.3: 05.36.21
Kernel 5.4: 05.44.21
Kernel 5.5: 05.52.21