CVE-2021-38576

Name	CVE-2021-38576
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-4207-1
Debian Bugs	1014468

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
edk2 (PTS)	bookworm	2022.11-6+deb12u2	fixed
	bookworm (security)	2022.11-6+deb12u1	fixed
	trixie	2025.02-8+deb13u1	fixed
	forky, sid	2026.05-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
edk2	source	bullseye	2020.11-2+deb11u3		DLA-4207-1
edk2	source	(unstable)	2021.11-1			1014468

[buster] - edk2 <no-dsa> (Minor issue)
https://bugzilla.tianocore.org/show_bug.cgi?id=3499
Fixed by: https://github.com/tianocore/edk2/pull/1968