CVE-2024-21953
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Improper Input Validation in AMD IOMMU Risks Guest Data Integrity

Publication date: 2026-02-10

Last updated on: 2026-02-10

Assigner: Advanced Micro Devices Inc.

Description
Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU registers resulting in loss of guest data integrity.

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Meta Information

Published
2026-02-10
Last Modified
2026-02-10
Generated
2026-07-06
AI Q&A
2026-02-10
EPSS Evaluated
2026-07-05
NVD
CVE-2024-21953
EUVD
EUVD-2024-19559

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
amd epyc From 1.37.2A (inc) to 1.37.31 (inc)
amd epyc From 1.0.0.F (inc) to 1.0.0.G (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-1284 The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

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Executive Summary

This vulnerability involves improper input validation in the IOMMU (Input-Output Memory Management Unit). It allows a malicious hypervisor to reconfigure IOMMU registers, which can lead to a loss of guest data integrity.

Impact Analysis

The impact of this vulnerability is that a malicious hypervisor could manipulate IOMMU registers, potentially causing loss of data integrity within guest systems. This could compromise the reliability and correctness of data processed or stored by affected guests.

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