Insyde Security Advisory 2022052

Insyde ID Advisory Category Impact of Vulnerability Severity Rating Original Date Last Revised
INSYDE-SA-2022052 Software CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L 7.4 11/08/2022 11/08/2022

Summary:

DMA attacks on the parameter buffer used by the Int15ServiceSmm software SMI handler could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM.

Vulnerability Details

CVE-2022-33982

DMA attacks on the parameter buffer used by the software SMI handler used by the driver Int15ServiceSmm could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM. This issue was discovered by Insyde engineering during a security review. This issue is 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

CWE-367

Revision History:

Revision Date Description
1.0 11/08/2022 Initial Release
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