Headline

CVE-2022-33985: Insyde Security Advisory 2022055 | Insyde Software

DMA transactions which are targeted at input buffers used for the NvmExpressDxe software SMI handler could cause SMRAM corruption through a TOCTOU attack. DMA transactions which are targeted at input buffers used for the software SMI handler used by the NvmExpressDxe 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. This issue was fixed in kernel 5.2: 05.27.25, kernel 5.3: 05.36.25, kernel 5.4: 05.44.25, kernel 5.5: 05.52.25 https://www.insyde.com/security-pledge/SA-2022055

2 years ago

CVE

Open in Source

#vulnerability #intel

Insyde ID

Advisory Category

Impact of Vulnerability

Severity Rating

Original Date

Last Revised

INSYDE-SA-2022055

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 NvmExpressDxe software SMI handler could cause SMRAM corruption through a TOCTOU attack.

****Vulnerability Details****

CVE-2022-33985

DMA transactions which are targeted at input buffers used for the software SMI handler used by the NvmExpressDxe 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. This issue was fixed in:

Kernel 5.2: 05.27.25
Kernel 5.3: 05.36.25
Kernel 5.4: 05.44.25
Kernel 5.5: 05.52.25

****Revision History:****

Revision

Date

Description

1.0

11/08/2022

Initial Release

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