Insyde's Security Pledge

Recent Security Advisories

INSYDE-SA-2023015

Product

CVSS Score

Original Date

Last Revised

InsydeH2O

7.8

2023-02-14

Summary

DMA attacks on the NvmExpressDxe shared buffer used by SMM and non-SMM code could cause TOCTOU issues which could lead to corruption of SMRAM and escalation of privileges.

Vulnerability Details

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVE-2022-32955

DMA attacks on the NvmExpressDxe shared buffer used by SMM and non-SMM code could cause TOCTOU issues which could lead to corruption of SMRAM and escalation of privileges. This issue was discovered by Insyde engineering. This issue was fixed in the kernel versions below:

Solution Information

Kernel 5.2: 05.27.38
Kernel 5.3, 05.36.38
Kernel 5.4, 05.44.38
Kernel 5.5: 05.52.38

Acknowledgements

Revision History

Revision #

Date

Description

1

2023-02-14

Initial Release