CVE-2021-38576

State: Published
Severity: Not scored
Published: Jan 3, 2022
Updated: Nov 3, 2025
Reserved: Aug 11, 2021

Description

A BIOS bug in firmware for a particular PC model leaves the Platform authorization value empty. This can be used to permanently brick the TPM in multiple ways, as well as to non-permanently DoS the system.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
EDK IIn/a	edk2-stable202105, edk2-stable202102, edk2-stable202011, edk2-stable202008, edk2-stable202005, edk2-stable202002, edk2-stable201911, edk2-stable201908, edk2-stable201905, edk2-stable201903, edk2-stable201811, edk2-stable201808Affected

References

https://bugzilla.tianocore.org/show_bug.cgi?id=3499
https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html

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