Insyde's Security Pledge
Insyde Security Advisory 2022044
| Insyde ID | Advisory Category | Impact of Vulnerability | Severity Rating | Original Date | Last Revised |
| INSYDE-SA-2022044 | Software | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H | 7.5 | 11/08/2022 | 11/08/2022 |
Summary:
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).
Vulnerability Details
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. Fixed in:
Kernel 5.2: 05.27.21
Kernel 5.3: 05.36.21
Kernel 5.4: 05.44.21
Kernel 5.5: 05.52.21
Revision History:
| Revision | Date | Description |
| 1.0 | 11/08/2022 | Initial Release |
| - | - | - |