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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | EDK II | edk2-stable202105, edk2-stable202102, edk2-stable202011, edk2-stable202008, edk2-stable202005, edk2-stable202002, edk2-stable201911, edk2-stable201908, edk2-stable201905, edk2-stable201903, edk2-stable201811, edk2-stable201808 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | edk2 | 2021.11-1 | — |
| Debian 13 | edk2 | 2021.11-1 | — |
| Debian 12 | edk2 | 2021.11-1 | — |
| Debian 11 | edk2 | 2020.11-2+deb11u3 | DLA-4207-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | edk2 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | edk2 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | edk2 | No fix yet | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | edk2-ovmf +3 | 20240813-296.amzn2 | ALAS2-2024-2722 |
Advisories 3
- DLA-4207-1 edk2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2023-1451 Insyde UEFI Firmware: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 5, 2025
- ALAS2-2024-2722 Important: edk2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Dec 19, 2024