Vulnerability · Published Feb 13, 2024 · Assigned by AMD
CVE-2023-31347
Medium 4.9
In plain English
A medium-severity security flaw in 3rd Gen AMD EPYC™ Processors from AMD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 3.1)4.9Medium
Exploit odds (30 days)0.5%top 60.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | linux-firmware | no fix listed | UBUNTU-CVE-2023-31347 |
| Ubuntu:24.04:LTS | linux-firmware | no fix listed | UBUNTU-CVE-2023-31347 |
| Ubuntu:25.10 | linux-firmware | no fix listed | UBUNTU-CVE-2023-31347 |
| Ubuntu:26.04:LTS | linux-firmware | no fix listed | UBUNTU-CVE-2023-31347 |
| Ubuntu:26.10 | linux-firmware | no fix listed | UBUNTU-CVE-2023-31347 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AMD | 3rd Gen AMD EPYC™ Processors | various |
| AMD | 4th Gen AMD EPYC™ Processors | various |
Weakness: CWE-682 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N