Skip to content
Fencer Vulns
high 8.3

CVE-2023-31364 json

Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine (VM) to…

published 2026-02-26 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2023-35675

cvss
8.3
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits
0
none known

Summary

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.

Patch / fix

  • 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
  • AMD AMD EPYC™ Embedded 9005 Series Processors EmbTurinPI-SP5 1.0.0.1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
8 mo ago

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.3 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
CNA 4.0 8.3 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/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

Affected products

  • AMD AMD EPYC™ 7001 Series Processors
  • AMD AMD EPYC™ 7002 Series Processors
  • AMD AMD EPYC™ 7003 Series Processors
  • AMD AMD EPYC™ 8004 Series Processors
  • AMD AMD EPYC™ 9004 Series Processors
  • AMD AMD EPYC™ 9005 Series Processors
  • AMD AMD EPYC™ Embedded 3000 Series Processors
  • AMD AMD EPYC™ Embedded 7002 Series Processors
  • AMD AMD EPYC™ Embedded 7003 Series Processors
  • AMD AMD EPYC™ Embedded 8004 Series Processors
  • AMD AMD EPYC™ Embedded 9004 Series Processor
  • AMD AMD EPYC™ Embedded 9005 Series Processors
  • AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 3000 Series Desktop Processors
  • AMD AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 7000 Series Desktop Processors
  • AMD AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics
  • AMD AMD Ryzen™ 8000 Series Desktop Processors
  • AMD AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors
  • AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors
  • AMD AMD Ryzen™ Embedded 5000 Series Processors
  • AMD AMD Ryzen™ Embedded 7000 Series Processors
  • AMD AMD Ryzen™ Embedded 8000 Series Processors
  • AMD AMD Ryzen™ Embedded R1000 Series Processors
  • AMD AMD Ryzen™ Embedded R2000 Series Processors
  • AMD AMD Ryzen™ Embedded V1000 Series Processors
  • AMD AMD Ryzen™ Embedded V2000 Series Processors
  • AMD AMD Ryzen™ Embedded V3000 Series Processors

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.