| 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, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1014468 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| edk2 (PTS) | bullseye (security), bullseye | 2020.11-2+deb11u2 | vulnerable |
| bookworm | 2022.11-6+deb12u2 | fixed |
| bookworm (security) | 2022.11-6+deb12u1 | fixed |
| trixie | 2025.02-6 | fixed |
| sid | 2025.02-7 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| edk2 | source | (unstable) | 2021.11-1 | | | 1014468 |
Notes
[bullseye] - edk2 <no-dsa> (Minor issue)
[buster] - edk2 <no-dsa> (Minor issue)
https://bugzilla.tianocore.org/show_bug.cgi?id=3499