edk2: A BIOS bug in firmware for a particular PC model leaves the Platform authorization value empty
CVE-2021-38576 is fixed in edk2 on 1 platform, first by DEBIAN-CVE-2021-38576, released January 3, 2022. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| edk2 · Debian 12.15 (bookworm) | 2021.11-1 | DEBIAN-CVE-2021-38576 | Jan 3, 2022 |
| edk2 · Debian 13.5 (trixie) | 2021.11-1 | DEBIAN-CVE-2021-38576 | Jan 3, 2022 |
| edk2 · Debian 14 | 2021.11-1 | DEBIAN-CVE-2021-38576 | Jan 3, 2022 |
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