PT-2026-7440 · Amd · Amd Processors

Published 2026-02-10 · Updated 2026-02-10 · CVE-2024-21953

Positive Technologies (AI Summary)

CVSS v4.0

5.9

Medium

Base vector

AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/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 AMD processors (affected versions not specified)

Description A flaw exists in the Input/Output Memory Management Unit (IOMMU) of AMD processor microcode due to incorrect validation of configuration data. Successful exploitation could allow a malicious hypervisor to reconfigure IOMMU registers, potentially leading to a loss of guest data integrity. This could allow an attacker to bypass security restrictions and impact the confidentiality of protected information.

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

Weakness Enumeration

CWE-1284

Related Identifiers

BDU:2026-01987

CVE-2024-21953

Affected Products

Amd Processors

References · 7

• https://ubuntu.com/security/CVE-2024-21953 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-21953 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-21953 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-21953 · Security Note
• https://bdu.fstec.ru/vul/2026-01987 · Security Note
• https://amd.com/en/resources/product-security/bulletin/Emb-Auto.html · Note
• https://amd.com/en/resources/product-security/bulletin/AMD-SB-3023.html · Note