Description
A Time-of-check time-of-use (TOCTOU) race condition in the SMM communications buffer could allow a privileged attacker to bypass input validation and perform an out of bounds read or write, potentially resulting in loss of confidentiality, integrity, or availability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AMD | AMD Ryzen™ 7045 Series Mobile Processors with Radeon™ Graphics | — | DragonRangeFL1PI 1.0.0.3h |
| AMD | AMD Ryzen™ 7000 Series Desktop Processors | — | ComboAM5PI 1.0.0.b |
| AMD | AMD Ryzen™ 9000HX Series Mobile Processors | — | FireRangeFL1PI 1.0.0.0a |
| AMD | AMD Ryzen™ 8000 Series Desktop Processors | — | ComboAM5PI 1.1.0.3d |
| AMD | AMD Ryzen™ 9000 Series Desktop Processors | — | ComboAM5PI 1.2.0.3d |
| AMD | AMD Ryzen™ Embedded 7000 Series Processors | — | EmbeddedAM5PI 1.0.0.4 |
Advisories 1
- WID-SEC-2026-0381 AMD EPYC, Athlon und Ryzen Prozessoren: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 28, 2026