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.
History

Mon, 20 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Amd
Amd epyc 7003 Series Processors
Amd epyc 9004 Series Processors
Amd epyc Embedded 7003 Series Processors
Amd epyc Embedded 9004 Series Processors
Vendors & Products Amd
Amd epyc 7003 Series Processors
Amd epyc 9004 Series Processors
Amd epyc Embedded 7003 Series Processors
Amd epyc Embedded 9004 Series Processors

Fri, 17 Apr 2026 03:15:00 +0000

Type Values Removed Values Added
Title Insufficient RMP Checks in IOMMU Allow Host Buffer Out‑of‑Bounds Access

Thu, 16 Apr 2026 19:30:00 +0000

Type Values Removed Values Added
Description Insuffient checks of the RMP on host buffer access in IOMMU may allow an attacker with privileges and a compromised HV to trigger an out of bounds condition without RMP checks resulting in a potential loss of confidential guest integrity. 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.

Thu, 16 Apr 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 16 Apr 2026 19:00:00 +0000

Type Values Removed Values Added
Description Insuffient checks of the RMP on host buffer access in IOMMU may allow an attacker with privileges and a compromised HV to trigger an out of bounds condition without RMP checks resulting in a potential loss of confidential guest integrity.
Weaknesses CWE-788
References
Metrics cvssV4_0

{'score': 5.6, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: AMD

Published: 2026-04-16T18:42:28.281Z

Updated: 2026-04-16T19:12:06.991Z

Reserved: 2022-10-27T18:53:39.759Z

Link: CVE-2023-20585

cve-icon Vulnrichment

Updated: 2026-04-16T18:58:11.213Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-16T19:16:31.430

Modified: 2026-04-17T15:14:05.510

Link: CVE-2023-20585

cve-icon Redhat

No data.