CVE-2023-20585

State: Published
Severity: 5.6 Medium
Published: Apr 16, 2026
Updated: Apr 16, 2026
Reserved: Oct 27, 2022

Description

Insufficient checks of the RMP on host buffer access in IOMMU may allow an attacker with privileges and a compromised hypervisor to trigger an out of bounds condition without RMP checks, resulting in a potential loss of confidential guest integrity.

Scores

CVSS	Score	Vector	Source
4.0	5.6 Medium	CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N	AMD

Weaknesses

CWE-788 Access of Memory Location After End of Buffer

Affected Products

Product	Versions
AMD EPYC™ 7003 Series ProcessorsAMD	SEV FW 1.37.23Not affected
AMD EPYC™ 9004 Series ProcessorsAMD	SEV FW 1.37.31Not affected
AMD EPYC™ Embedded 7003 Series ProcessorsAMD	EmbMilanPI-SP3 1.0.0.BNot affected
AMD EPYC™ Embedded 9004 Series ProcessorsAMD	EmbGenoaPI-1.0.0.ANot affected

References

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3016.html

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