An issue was discovered in IhisiServicesSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. There are arbitrary calls to SetVariable with unsanitized arguments in the SMI handler.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Insydeh2o | Insyde | 5.2 (including) | 5.2.05.28.33 (excluding) |
| Insydeh2o | Insyde | 5.3 (including) | 5.3.05.37.33 (excluding) |
| Insydeh2o | Insyde | 5.4 (including) | 5.4.05.45.33 (excluding) |
| Insydeh2o | Insyde | 5.5 (including) | 5.5.05.53.33 (excluding) |
| Insydeh2o | Insyde | 5.6 (including) | 5.6.05.60.33 (excluding) |