CVE-2023-31315

7.5 HIGH

Published: August 12, 2024 Modified: April 15, 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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7014.html

Source: psirt@amd.com

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

Source: af854a3a-2127-422b-91ae-364da2661108

https://news.ycombinator.com/item?id=41475975

Source: af854a3a-2127-422b-91ae-364da2661108

https://www.darkreading.com/remote-workforce/amd-issues-updates-for-silicon-level-sinkclose-flaw

Source: af854a3a-2127-422b-91ae-364da2661108

4 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.5 / 10.0

EPSS (Exploit Probability)

0.0%

10th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-94

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