Headline

CVE-2022-33905: Insyde Security Advisory 2022047 | Insyde Software

DMA transactions which are targeted at input buffers used for the AhciBusDxe software SMI handler could cause SMRAM corruption (a TOCTOU attack). 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 https://www.insyde.com/security-pledge/SA-2022047

2 years ago

CVE

Open in Source

#vulnerability #intel

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

****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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