Description
A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow
an attacker with ring0 privileges and access to the
BIOS menu or UEFI shell to modify the communications buffer potentially
resulting in arbitrary code execution.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AMD | AMD EPYC™ 7001 Processors | — | NaplesPI 1.0.0.K |
| AMD | AMD EPYC™ 7002 Processors | — | RomePI 1.0.0.G |
| AMD | AMD EPYC™ 7003 Processors | — | MilanPI 1.0.0.B |
| AMD | AMD EPYC™ 9004 Processors | — | GenoaPI 1.0.0.2 |
| AMD | AMD Ryzen™ 7000 Series Desktop Processors | — | ComboAM5 1.0.0.1 |
| AMD | AMD Ryzen™ Threadripper™ PRO 5000WX Processors | — | ChagallWSPI-sWRX8 1.0.0.7 |
| AMD | AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics | — | MendocinoPI-FT6 1.0.0.0 |
| AMD | AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics | — | RembrandtPI-FP7 1.0.0.9b |
| AMD | AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics | — | RembrandtPI-FP7 1.0.0.9b |
| AMD | AMD EPYC™ Embedded 3000 | — | SnowyOwl PI 1.1.0.A |
| AMD | AMD EPYC™ Embedded 7002 | — | EmbRomePI-SP3 1.0.0.A |
| AMD | AMD EPYC™ Embedded 7003 | — | EmbMilanPI-SP3 1.0.0.7 |
| AMD | AMD EPYC™ Embedded 9003 | — | EmbGenoaPI-SP5 1.0.0.0 |
| AMD | AMD Ryzen™ Embedded 7000 | — | EmbeddedAM5PI 1.0.0.0 |
| AMD | AMD RyzenTM Embedded V3000 | — | EmbeddedPI-FP7r2 1.0.0.8 |
Advisories 1
- WID-SEC-2024-1837 AMD Prozessoren: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 12, 2026