Insyde's Security Pledge
Insyde Security Advisory 2022048
| Insyde ID | Advisory Category | Impact of Vulnerability | Severity Rating | Original Date | Last Revised |
| INSYDE-SA-2022048 | Software | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | 8.2 | 11/08/2022 | 11/08/2022 |
Summary:
DMA transactions which are targeted at input buffers used for the FwBlockServiceSmm software SMI handler could cause SMRAM corruption through a TOCTOU attack.
Vulnerability Details
DMA transactions which are targeted at input buffers used for the software SMI handler used by the FwBlockServiceSmm driver could cause SMRAM corruption through a TOCTOU attack. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group. Fixed in:
Kernel 5.2: 05.27.23
Kernel 5.3: 05.36.23
Kernel 5.4: 05.44.23
Kernel 5.5: 05.52.23
Revision History:
| Revision | Date | Description |
| 1.0 | 11/08/2022 | Initial Release |
| - | - | - |