Insyde's Security Pledge
Insyde Security Advisory 2022012
| Insyde ID | Advisory Category | Impact of Vulnerability | Severity Rating | Original Date | Last Revised |
| INSYDE-SA-2022012 | Software | AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H | 7.5 | 02/01/2022 | 02/01/2022 |
Summary:
SMM memory corruption vulnerability allowing a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
Vulnerability Details
This corresponds to CVE-2021-42554. It affects the FvbServicesRuntimeDxe driver. It was reported by the Binarly efiXplorer team. It is fixed in the following InsydeH2O kernel versions: Kernel 5.0: 05.08.42, Kernel 5.1: 05.16.42, Kernel 5.2: 05.26.42, Kernel 5.3: 05.35.42, Kernel 5.4: 05.42.51, Kernel 5.5: 05.50.51
Acknowledgements:
Insyde Software would like to thank Binarly for reporting this issue.
Revision History:
| Revision | Date | Description |
| 1.0 | 02/01/2022 | Initial Release |
| - | - | - |