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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AMD | AMD EPYC™ 7003 Series Processors | — | MilanPI 1.0.0.D |
| AMD | AMD EPYC™ 9004 Series Processors | — | GenoaPI 1.0.0.C |
| AMD | AMD EPYC™ 8004 Series Processors | — | GenoaPI 1.0.0.C |
| AMD | AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors | — | ChagallWSPI-sWRX8 1.0.0.8 |
| AMD | AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics | — | CezannePI-FP6_1.0.1.1 |
| AMD | AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics | — | RembrandtPI-FP7/FP7r2_1.0.0.B |
| AMD | AMD Ryzen™ 5000 Series Desktop Processors | — | ComboAM4v2 1.2.0.Cb |
| AMD | AMD Ryzen™ 7000 Series Desktop Processors | — | ComboAM5 1.2.0.1 |
| AMD | AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics | — | PhoenixPI-FP8-FP7_1.1.0.3 |
| AMD | AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics | — | RembrandtPI-FP7/FP7r2_1.0.0.B |
| AMD | AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics | — | DragonRangeFL1 1.0.0.3e |
| AMD | AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors | — | ChagallWSPI-sWRX8 1.0.0.8 |
| AMD | AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics | — | CezannePI-FP6_1.0.1.1 |
| AMD | AMD Ryzen™ 8000 Series Desktop Processors | — | ComboAM5 1.2.0.1 |
| AMD | AMD EPYC™ Embedded 7003 Series Processors | — | EmbMilanPI-SP3 1.0.0.9 |
| AMD | AMD EPYC™ Embedded 9004 Series Processors | — | EmbGenoaPI-SP5 1.0.0.9 |
| AMD | AMD Ryzen™ Embedded 8000 Series Processors | — | EmbeddedPhoenixPI-FP7r2_1.2.0.0 |
| AMD | AMD Ryzen™ Embedded 7000 Series Processors | — | EmbeddedAM5PI 1.0.0.3 |
| AMD | AMD Ryzen™ Embedded 5000 Series Processors | — | EmbAM4PI 1.0.0.7 |
| AMD | AMD Ryzen™ Embedded V3000 Series Processors | — | Embedded-PI_FP7r2 100A |
Advisories 1
- WID-SEC-2025-1770 AMD Prozessoren: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 28, 2026