Insyde Security Advisory 2022008

Insyde ID Advisory Category Impact of Vulnerability Severity Rating Original Date Last Revised
INSYDE-SA-2022008 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 corresponds to CVE-2021-42113. It affects the StorageSecurityCommandDxe driver. It was discovered by the Binarly efiXplorer team. It is fixed in the InsydeH2O kernel: Kernel 5.1: 05.14.34, Kernel 5.2: 05.24.34, Kernel 5.3: 05.33.34, Kernel 5.4: unaffected. Kernel 5.5: unaffected.


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

Revision History:

Revision Date Description
1.0 02/01/2022 Initial Release
- - -

Return to Insyde's Security Pledge