Insyde Security Advisory 2022047

Insyde ID Advisory Category Impact of Vulnerability Severity Rating Original Date Last Revised
INSYDE-SA-2022047 Software CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H 7.8 11/08/2022 11/08/2022

Summary:

DMA transactions which are targeted at input buffers used for the AhciBusDxe software SMI handler could cause SMRAM corruption (a TOCTOU attack).

Vulnerability Details

CVE-2022-33905

DMA transactions which are targeted at input buffers used for the software SMI handler used by the AhciBusDxe driver could cause SMRAM corruption through a TOCTOU attack. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group, Fixed in:

Kernel 5.2: 05.27.23
Kernel 5.3: 05.36.23
Kernel 5.4: 05.44.23
Kernel 5.5: 05.52.23

Revision History:

Revision Date Description
1.0 11/08/2022 Initial Release
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