CVE-2021-3716 · cross-distro fix matrix

CVE-2021-3716: A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminat

Affects 2 Linux releases across 2 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-3716 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

nbdkit→ fixed in1.26.5-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y nbdkit
```

Debian trixie

Source: Debian Security Tracker

nbdkit→ fixed in1.26.5-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y nbdkit
```

Are YOU affected by CVE-2021-3716?

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.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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