CVE-2024-21977

State: Published
Severity: 3.2 Low
Published: Sep 5, 2025
Updated: Sep 5, 2025
Reserved: Jan 3, 2024

Description

Incomplete cleanup after loading a CPU microcode patch may allow a privileged attacker to degrade the entropy of the RDRAND instruction, potentially resulting in loss of integrity for SEV-SNP guests.

Scores

CVSS	Score	Vector	Source
3.1	3.2 Low	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N	AMD

Weaknesses

CWE-459 Incomplete Cleanup

Affected Products

Product	Versions
AMD EPYC™ 7003 Series ProcessorsAMD	MilanPI 1.0.0.DNot affected
AMD EPYC™ 9004 Series ProcessorsAMD	GenoaPI 1.0.0.CNot affected
AMD EPYC™ 8004 Series ProcessorsAMD	GenoaPI 1.0.0.CNot affected
AMD Ryzen™ Threadripper™ PRO 5000 WX-Series ProcessorsAMD	ChagallWSPI-sWRX8 1.0.0.8Not affected
AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ GraphicsAMD	CezannePI-FP6_1.0.1.1Not affected
AMD Ryzen™ 7035 Series Processors with Radeon™ GraphicsAMD	RembrandtPI-FP7/FP7r2_1.0.0.BNot affected
AMD Ryzen™ 5000 Series Desktop ProcessorsAMD	ComboAM4v2 1.2.0.CbNot affected
AMD Ryzen™ 7000 Series Desktop ProcessorsAMD	ComboAM5 1.2.0.1Not affected
AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ GraphicsAMD	PhoenixPI-FP8-FP7_1.1.0.3Not affected
AMD Ryzen™ 6000 Series Processors with Radeon™ GraphicsAMD	RembrandtPI-FP7/FP7r2_1.0.0.BNot affected
AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ GraphicsAMD	DragonRangeFL1 1.0.0.3eNot affected
AMD Ryzen™ Threadripper™ PRO 3000 WX-Series ProcessorsAMD	ChagallWSPI-sWRX8 1.0.0.8Not affected
AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ GraphicsAMD	CezannePI-FP6_1.0.1.1Not affected
AMD Ryzen™ 8000 Series Desktop ProcessorsAMD	ComboAM5 1.2.0.1Not affected
AMD EPYC™ Embedded 7003 Series ProcessorsAMD	EmbMilanPI-SP3 1.0.0.9Not affected
AMD EPYC™ Embedded 9004 Series ProcessorsAMD	EmbGenoaPI-SP5 1.0.0.9Not affected
AMD Ryzen™ Embedded 8000 Series ProcessorsAMD	EmbeddedPhoenixPI-FP7r2_1.2.0.0Not affected
AMD Ryzen™ Embedded 7000 Series ProcessorsAMD	EmbeddedAM5PI 1.0.0.3Not affected
AMD Ryzen™ Embedded 5000 Series ProcessorsAMD	EmbAM4PI 1.0.0.7Not affected
AMD Ryzen™ Embedded V3000 Series ProcessorsAMD	Embedded-PI_FP7r2 100ANot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.