CVE-2023-31364

HIGH

AMD EPYC Processors - Denial of Service via IOMMU Direct Memory Write Flood

Title source: llm

Description

Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine (VM) to flood a host with writes, potentially causing a fatal machine check error resulting in denial of service.

References (1)

Core 1

Core References

Vendor Advisory

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7059.html

Scores

CVSS v4 8.3

EPSS 0.0006

EPSS Percentile 19.3%

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-119

Status published

Products (33)

AMD/AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics No Fix Planned

AMD/AMD EPYC™ 7001 Series Processors NaplesPI 1.0.0.R

AMD/AMD EPYC™ 7002 Series Processors RomePI 1.0.0.N

AMD/AMD EPYC™ 7003 Series Processors MilanPI 1.0.0.H

AMD/AMD EPYC™ 8004 Series Processors GenoaPI 1.0.0.G

AMD/AMD EPYC™ 9004 Series Processors GenoaPI 1.0.0.G

AMD/AMD EPYC™ 9005 Series Processors TurinPI 1.0.0.7

AMD/AMD EPYC™ Embedded 3000 Series Processors SnowyOwl_SP4_SP4r2.1.1.0.H

AMD/AMD EPYC™ Embedded 7002 Series Processors EmbRomePI-SP3 1.0.0.F

AMD/AMD EPYC™ Embedded 7003 Series Processors EmbMilanPI-SP3 v9 1.0.0.C

... and 23 more

Published Feb 26, 2026

Tracked Since Feb 27, 2026