Improper Exception Handling in AMD IOMMU Affecting PCIe Devices
CVE-2024-21954

7HIGH

Key Information:

Vendor

Amd
Status
Amd Epyc™ 7003 Series Processors
Amd Epyc™ 9004 Series Processors
Amd Epyc™ Embedded 7003 Series Processors
Amd Epyc™ Embedded 9004 Series Processors (formerly Codenamed "genoa")
Vendor
CVE Published:
12 November 2026

What is CVE-2024-21954?

An improper exception handling vulnerability in AMD's IOMMU (Input-Output Memory Management Unit) may allow an attacker to send an invalidate command to certain PCIe devices lacking support for Address Translation Cache (ATC). This flaw could potentially lead to denial of service, disrupting normal operations and affecting system stability.

Affected Version(s)

AMD EPYC™ 7003 Series Processors MilanPI-SP3_1.0.0.J

AMD EPYC™ 9004 Series Processors GenoaPI_1.0.0.H

AMD EPYC™ Embedded 7003 Series Processors EmbMilanPI-SP3 1.0.0.D

References

https://www.amd.com/en/resources/product-security/bulleti...

CVSS V4

Score:
7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.