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


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.


Insyde Software would like to thank Binarly for reporting this issue.

Revision History:

Revision Date Description
1.0 02/01/2022 Initial Release
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