Description
Due to a code bug in
Secure_TSC, SEV firmware may allow an attacker with high privileges to cause a
guest to observe an incorrect TSC when Secure TSC is enabled potentially
resulting in a loss of guest integrity.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AMD | 3rd Gen AMD EPYC™ Processors | various | — |
| AMD | 4th Gen AMD EPYC™ Processors | various | — |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | linux-firmware | No fix yet | — |
| Ubuntu 26.04 LTS | linux-firmware | No fix yet | — |
| Ubuntu 25.10 | linux-firmware | No fix yet | — |
| Ubuntu 24.04 LTS | linux-firmware | No fix yet | — |
| Ubuntu 22.04 LTS | linux-firmware | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-firmware | No fix yet | — |
| Ubuntu 14.04 LTS | linux-firmware | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux-firmware | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux-firmware | No fix yet | — |
Advisories 1
- WID-SEC-2024-0371 AMD SEV-SNP Firmware für Prozessoren: Mehrere Schwachstellen ermöglichen Offenlegung von Informationen BSI CERT-Bund (WID) · Dec 15, 2024