CVE-2026-0465

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Use-After-Free in AMD Ryzen Master Utility Driver

Publication date: 2026-08-11

Last updated on: 2026-08-12

Assigner: Advanced Micro Devices Inc.

Description

A Use‑After‑Free (UAF) vulnerability in the AMD Ryzen™ Master Utility Driver could allow a local attacker to access kernel memory, potentially resulting in loss of availability

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-11

Last Modified

2026-08-12

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-0465

EUVD

EUVD-2026-56781

Affected Vendors & Products

Vendor	Product	Version / Range
amd	ryzen_master_utility_driver	*
amd	ryzen_master	From 3.0.0.4199 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This is a Use-After-Free (UAF) vulnerability in the AMD Ryzen Master Utility Driver. It allows a local attacker to access kernel memory, which could lead to system instability or crashes by disrupting normal memory operations.

Detection Guidance

Detection of CVE-2026-0465 requires checking for vulnerable versions of the AMD Ryzen Master Utility Driver. Inspect installed driver versions and compare them against the patched release. No specific commands are provided in the context for detection.

Impact Analysis

A successful exploit could allow an attacker to cause a denial of service by crashing the system or potentially gain unauthorized access to sensitive kernel memory, though no remote code execution is mentioned.

Compliance Impact

The provided CVE data does not specify direct impacts on compliance with GDPR, HIPAA, or other standards. The vulnerability involves a Use-After-Free issue in the AMD Ryzen Master Utility Driver, which could lead to loss of availability due to kernel memory access. Compliance implications would depend on how the affected system is used and whether it handles regulated data.

Mitigation Strategies

Update AMD Ryzen Master Utility Driver to the latest version provided by AMD to address the Use-After-Free vulnerability. Disable or uninstall the vulnerable driver if updates are unavailable. Monitor AMD security bulletins for patches and apply them promptly.

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