# CVE-2024-21954: CVE-2024-21954

Status: published. Published: 2026-11-12. Updated: 2026-11-13.

Improper exception handling in IOMMU could allow an invalidate command to be sent to PCIe devices that do not support Address Translation Cache (ATC), potentially resulting in denial of service.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- AMD / AMD EPYC™ 7003 Series Processors: MilanPI-SP3_1.0.0.J (unaffected). Source: CNA: AMD
- AMD / AMD EPYC™ 9004 Series Processors: GenoaPI_1.0.0.H (unaffected). Source: CNA: AMD
- AMD / AMD EPYC™ Embedded 7003 Series Processors: EmbMilanPI-SP3 1.0.0.D (unaffected). Source: CNA: AMD
- AMD / AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa"): EmbGenoaPI-SP5 1.0.0.D (unaffected). Source: CNA: AMD

## Severity and prioritization

- CVSS 4.0: 7 (high); CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H; source: CNA: AMD

- CVSS 4.0: 7 (high); CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: psirt@amd.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-754

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3052.html (CNA: AMD)

- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3052.html (psirt@amd.com)

## Provenance

- CNA: AMD: https://www.cve.org/CVERecord?id=CVE-2024-21954; retrieved 2026-11-13; source updated 2026-11-13

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-21954; retrieved 2026-11-13; source updated 2026-11-12

Revision: 0a7ebe6fd427c362275ca31d0fc55ed11cae0e97dd56567866c9f0e195a0a296

Canonical: https://y2.dev/cve/CVE-2024-21954

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