CVE-2022-31243

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

15/11/2022

Last modified:

30/04/2025

Description

Update description and links DMA transactions which are targeted at input buffers used for the software SMI handler used by the FvbServicesRuntimeDxe driver 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 FvbServicesRuntimeDxe driver could cause SMRAM corruption. This issue was discovered by Insyde engineering based on the general description provided by Intel&#39;s iSTARE group. Fixed in Kernel 5.2: 05.27.21. Kernel 5.3: 05.36.21. Kernel 5.4: 05.44.21. Kernel 5.5: 05.52.21 https://www.insyde.com/security-pledge/SA-2022044

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.40 MEDIUM
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

6.40

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:insyde:kernel::::::::	5.2 (including)	5.2.05.27.21 (excluding)
cpe:2.3:a:insyde:kernel::::::::	5.3 (including)	5.3.05.36.21 (excluding)
cpe:2.3:a:insyde:kernel::::::::	5.4 (including)	5.4.05.44.21 (excluding)
cpe:2.3:a:insyde:kernel::::::::	5.5 (including)	5.5.05.52.21 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2022-31243

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools