CVE-2024-21953

amd64-microcode: Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU registers resulting in los...

CVE-2024-21953 is fixed in amd64-microcode on 1 platform by DEBIAN-CVE-2024-21953 (version 3.20260923.1), released February 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

n/a

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0019

8th percentile

Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU registers resulting in loss of guest data integrity.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
amd64-microcode · Debian 14	3.20260923.1	DEBIAN-CVE-2024-21953	Feb 10, 2026

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