CVE-2021-46795: amd cezannepi-fp6_firmware

Vulnerability summary

CVE-2021-46795 is a medium (CVSS 4.7) vulnerability in amd cezannepi-fp6_firmware. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 2.8% of scored vulnerabilities.

Timeline

1. 10-01-2023
   PublishedVulnerability first disclosed.
2. 09-04-2025
   Last modifiedVulnerability information updated.

Description

A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.

• CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionThe product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.