Insyde's Security Pledge
Insyde Security Advisory 2022056
| Insyde ID | Advisory Category | Impact of Vulnerability | Severity Rating | Original Date | Last Revised |
| INSYDE-SA-2022056 | Software | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L | 7.4 | 11/08/2022 | 11/08/2022 |
Summary:
DMA attacks on the parameter buffer used by the VariableRuntimeDxe software SMI handler could lead to a TOCTOU attack.
Vulnerability Details
DMA attacks on the parameter buffer used by the software SMI handler used by the driver VariableRuntimeDxe could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM. This issue was discovered by Insyde engineering during a security review. This issue is fixed in:
Kernel 5.4: 05.44.23
Kernel 5.5: 05.52.23
CWE-367
Revision History:
| Revision | Date | Description |
| 1.0 | 11/08/2022 | Initial Release |
| - | - | - |