CVE-2021-3565 · cross-distro fix matrix

CVE-2021-3565: A flaw was found in tpm2-tools in versions before 5.1.1 and before 4.3.2. tpm2_import used a fixed AES key for the inner wrapper, potentially allowing a MITM attacker to unwrap the inner portion and reveal the key being imported. The highest threat from this vulnerability is to data confidentiality.

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-3565 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

tpm2-tools→ fixed in5.0-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tpm2-tools
```

Debian bookworm

Source: Debian Security Tracker

tpm2-tools→ fixed in5.0-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tpm2-tools
```

Debian trixie

Source: Debian Security Tracker

tpm2-tools→ fixed in5.0-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tpm2-tools
```

Are YOU affected by CVE-2021-3565?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

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