PT-2026-22189 · Unknown · Input-Output Memory Management Unit

Published 2026-02-26 · Updated 2026-02-27 · CVE-2023-31364

Positive Technologies (AI Summary)

CVSS v4.0

8.3

High

Base vector

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

Name of the Vulnerable Software and Affected Versions versions (affected versions not specified)

Description A flaw exists due to improper handling of direct memory writes in the input-output memory management unit. A malicious guest virtual machine (VM) could potentially overwhelm the host with write requests, leading to a fatal machine check error and denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2023-31364

Affected Products

Input-Output Memory Management Unit

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2023-31364 · Security Note
• https://twitter.com/infoflowcloud/status/2027467817327501610 · Twitter Post
• https://amd.com/en/resources/product-security/bulletin/amd-sb-7059.html · Note
• https://twitter.com/CVEnew/status/2027466659192316283 · Twitter Post