CVE catalog
CVE-2021-38576
edk2: CVE-2021-38576
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.17% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | edk2 | sid | 2026.08+ds-2 | fixed |
| Debian | edk2 | forky | 2026.08+ds-2 | fixed |
| Debian | edk2 | trixie | 2025.02-8+deb13u1 | fixed |
| Debian | edk2 | bookworm | 2022.11-6+deb12u2 | fixed |
| Debian | edk2 | bookworm-security | 2022.11-6+deb12u1 | fixed |
| Ubuntu | edk2 | pro | 0~20190606.20d2e5a1-2ubuntu1 | vulnerable |
| Ubuntu | edk2 | pro | 0~20190828.37eef910-3 | vulnerable |
| Ubuntu | edk2 | pro | 0~20190828.37eef910-4 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-1 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-1ubuntu1 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-2 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-2ubuntu1 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-2ubuntu2 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-2ubuntu3 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-2ubuntu3.1 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-2ubuntu3.2 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-2ubuntu3.3 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-2ubuntu3.4 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-2ubuntu3.5 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-2ubuntu3.6 | vulnerable |
| Ubuntu | edk2 | pro | 0~20191122.bd85bf54-2ubuntu3.6+esm1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | edk2 | source | sid | 2021.11-1 | not yet assigned | Not reported | [1014468] |
| Debian | edk2 | source | forky | 2021.11-1 | not yet assigned | Not reported | [1014468] |
| Debian | edk2 | source | trixie | 2021.11-1 | not yet assigned | Not reported | [1014468] |
| Debian | edk2 | source | bookworm | 2021.11-1 | not yet assigned | Not reported | [1014468] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [ovmf]Fixed
Source package: [edk2]
Details (4)
2022.11-6+deb12u2· all · bookwormFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u2· all · bookwormFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u1· all · bookworm-securityFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u1· all · bookworm-securityFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
- [ovmf-ia32]Fixed
Source package: [edk2]
Details (4)
2022.11-6+deb12u2· all · bookwormFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u2· all · bookwormFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u1· all · bookworm-securityFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u1· all · bookworm-securityFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
- [qemu-efi]Fixed
Source package: [edk2]
Details (4)
2022.11-6+deb12u2· all · bookwormFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u2· all · bookwormFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u1· all · bookworm-securityFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u1· all · bookworm-securityFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
- [qemu-efi-aarch64]Fixed
Source package: [edk2]
Details (4)
2022.11-6+deb12u2· all · bookwormFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u2· all · bookwormFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u1· all · bookworm-securityFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u1· all · bookworm-securityFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
- [qemu-efi-arm]Fixed
Source package: [edk2]
Details (4)
2022.11-6+deb12u2· all · bookwormFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u2· all · bookwormFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u1· all · bookworm-securityFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
2022.11-6+deb12u1· all · bookworm-securityFixed · Fixed:
2021.11-1dsa · edk2 · debian · bookworm; dsa · edk2 · debian · 12
[Debian 13 (Trixie)]
- [efi-shell-aa64]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
- [efi-shell-arm]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
- [efi-shell-ia32]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
- [efi-shell-loongarch64]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
- [efi-shell-riscv64]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
- [efi-shell-x64]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
- [ovmf]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
- [ovmf-ia32]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
- [qemu-efi-aarch64]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
- [qemu-efi-arm]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
- [qemu-efi-loongarch64]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
- [qemu-efi-riscv64]Fixed
Source package: [edk2]
Details (2)
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
2025.02-8+deb13u1· all · trixieFixed · Fixed:
2021.11-1dsa · edk2 · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-38576]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-38576]
- [https://security-tracker.debian.org/tracker/CVE-2021-38576]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-1451.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]