CVE-2023-31315

Severity CVSS v4.0:

Pending analysis

Type:

CWE-94 Code Injection

Publication date:

12/08/2024

Last modified:

15/04/2026

Description

Improper validation in a model specific register (MSR) could allow a malicious program with ring0 access to modify SMM configuration while SMI lock is enabled, potentially leading to arbitrary code execution.

Impact

Vector 3.x

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

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

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

Base Score 3.x

7.50

Severity 3.x

HIGH

References to Advisories, Solutions, and Tools

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7014.html
https://media.defcon.org/DEF%20CON%2032/DEF%20CON%2032%20presentations/DEF%20CON%2032%20-%20Enrique%20Nissim%20Krzysztof%20Okupski%20-%20AMD%20Sinkclose%20Universal%20Ring-2%20Privilege%20Escalation.pdf
https://news.ycombinator.com/item?id=41475975
https://www.darkreading.com/remote-workforce/amd-issues-updates-for-silicon-level-sinkclose-flaw