CVE-2023-31347
No fix known EPSS <1%CVSS 4.9
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.
Products: 3rd Gen AMD EPYC™ Processors, 4th Gen AMD EPYC™ Processors
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu 14.04 LTS | linux-firmware | no fix |
| Ubuntu 16.04 LTS | linux-firmware | no fix |
| Ubuntu 22.04 LTS | linux-firmware | no fix |
| Ubuntu 24.04 LTS | linux-firmware | no fix |
| Ubuntu 25.10 | linux-firmware | no fix |
| Ubuntu 26.04 LTS | linux-firmware | no fix |
| Ubuntu 26.10 | linux-firmware | no fix |
| Ubuntu Pro 18.04 LTS | linux-firmware | no fix |
| Ubuntu Pro 20.04 LTS | linux-firmware | no fix |