CVE-2024-21977
Published: Sep 5, 2025
Modified: Sep 5, 2025
CVSS v3.1
3.2
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.
| Vendor | Product | Versions |
|---|---|---|
AMD | AMD EPYC™ 7003 Series Processors | unaffected MilanPI 1.0.0.D |
AMD | AMD EPYC™ 9004 Series Processors | unaffected GenoaPI 1.0.0.C |
AMD | AMD EPYC™ 8004 Series Processors | unaffected GenoaPI 1.0.0.C |
AMD | AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors | unaffected ChagallWSPI-sWRX8 1.0.0.8 |
AMD | AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics | unaffected CezannePI-FP6_1.0.1.1 |
AMD | AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics | unaffected RembrandtPI-FP7/FP7r2_1.0.0.B |
AMD | AMD Ryzen™ 5000 Series Desktop Processors | unaffected ComboAM4v2 1.2.0.Cb |
AMD | AMD Ryzen™ 7000 Series Desktop Processors | unaffected ComboAM5 1.2.0.1 |
AMD | AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics | unaffected PhoenixPI-FP8-FP7_1.1.0.3 |
AMD | AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics | unaffected RembrandtPI-FP7/FP7r2_1.0.0.B |
AMD | AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics | unaffected DragonRangeFL1 1.0.0.3e |
AMD | AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors | unaffected ChagallWSPI-sWRX8 1.0.0.8 |
AMD | AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics | unaffected CezannePI-FP6_1.0.1.1 |
AMD | AMD Ryzen™ 8000 Series Desktop Processors | unaffected ComboAM5 1.2.0.1 |
AMD | AMD EPYC™ Embedded 7003 Series Processors | unaffected EmbMilanPI-SP3 1.0.0.9 |
AMD | AMD EPYC™ Embedded 9004 Series Processors | unaffected EmbGenoaPI-SP5 1.0.0.9 |
AMD | AMD Ryzen™ Embedded 8000 Series Processors | unaffected EmbeddedPhoenixPI-FP7r2_1.2.0.0 |
AMD | AMD Ryzen™ Embedded 7000 Series Processors | unaffected EmbeddedAM5PI 1.0.0.3 |
AMD | AMD Ryzen™ Embedded 5000 Series Processors | unaffected EmbAM4PI 1.0.0.7 |
AMD | AMD Ryzen™ Embedded V3000 Series Processors | unaffected Embedded-PI_FP7r2 100A |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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