Insyde's Security Pledge
Insyde Security Advisory 2022016
| Insyde ID | Advisory Category | Impact of Vulnerability | Severity Rating | Original Date | Last Revised |
| INSYDE-SA-2022016 | Software | AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | 8.2 | 02/01/2022 | 02/01/2022 |
Summary:
SMM callout vulnerability allowing a possible attacker to hijack execution flow of a code running in System Management Mode. Exploiting this issue could lead to escalating privileges to SMM.
Vulnerability Details
This issue corresponds to CVE-2021-43323. It affects the UsbCoreDxe driver. It was reported by the Binarly efiXplorer team. The fixes are available for the Insyde kernel: Kernel 5.0: 05.08.45, Kernel 5.1: 05.16.45, Kernel 5.2: 05.26.45, Kernel 5.3: 05.35.45, Kernel 5.4: 05.43.45, Kernel 5.5: 05.51.45.
Acknowledgements:
Insyde Software would like to thank Binarly for reporting this issue.
Revision History:
| Revision | Date | Description |
| 1.0 | 02/01/2022 | Initial Release |
| - | - | - |