CVE Vulnerabilities

CVE-2021-46795

Time-of-check Time-of-use (TOCTOU) Race Condition

Published: Jan 11, 2023 | Modified: Apr 09, 2025
CVSS 3.x
4.7
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
1.9 LOW
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
Ubuntu

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.

Weakness

The 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.

Affected Software

Name Vendor Start Version End Version
Comboam4v2_pi_firmware Amd * 1.2.0.5 (excluding)

Potential Mitigations

References