Description
Improper Initialization within the AMD Secure Encrypted Virtualization (SEV) firmware can allow an admin privileged attacker to corrupt RMP covered memory, potentially resulting in loss of guest memory integrity
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AMD | AMD EPYC™ 9005 Series Processors | — | TurinPI 1.0.0.6 |
| AMD | AMD EPYC™ Embedded 9005 Series Processors | — | EmbTurinPI-SP5_1.0.0.1 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | amd64-microcode | 3.20260923.1 | — |
| Debian 13 | amd64-microcode | No fix yet | — |
| Debian 12 | amd64-microcode | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | amd64-microcode | No fix yet | — |
| Ubuntu 26.04 LTS | amd64-microcode | No fix yet | — |
| Ubuntu 25.10 | amd64-microcode | No fix yet | — |
| Ubuntu 24.04 LTS | amd64-microcode | No fix yet | — |
Advisories 1
- WID-SEC-2026-0381 AMD EPYC, Athlon und Ryzen Prozessoren: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 28, 2026