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CVE-2021-46795

hw: amd: TOCTOU (time-of-check to time-of-use) vulnerability cause memory out of bound results in a denial of service

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Severity

Low

Red Hat Product Security

1.9

CVSS 3.1

Review impact separately from score.

Published · January 10, 2023

Updated · November 21, 2025

Description

A Time-of-check to time-of-use (TOCTOU) vulnerability exists in hw. This flaw allows an attacker to use a compromised BIOS to cause the trusted execution environment (TEE) operating system to read memory out-of-bounds, potentially resulting in a denial of service.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Please contact AMD for more updates on this flaw.

CVSS / CWE

CVSS 3.1 · 1.9
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L

CWE not specified