CVE-2006-4251 · cross-distro fix matrix

CVE-2006-4251: Buffer overflow in PowerDNS Recursor 3.1.3 and earlier might allow remote attackers to execute arbitrary code via a malformed TCP DNS query that prevents Recursor from properly calculating the TCP DNS query length.

Affects 3 Linux releases across 6 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2006-4251 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

pdns→ fixed in2.9.20-4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y pdns
```

pdns-recursor→ fixed in3.1.4-1urgency: high

sudo apt-get install --only-upgrade -y pdns-recursor

Debian bookworm

Source: Debian Security Tracker

pdns→ fixed in2.9.20-4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y pdns
```

pdns-recursor→ fixed in3.1.4-1urgency: high

sudo apt-get install --only-upgrade -y pdns-recursor

Debian trixie

Source: Debian Security Tracker

pdns→ fixed in2.9.20-4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y pdns
```

pdns-recursor→ fixed in3.1.4-1urgency: high

sudo apt-get install --only-upgrade -y pdns-recursor

Are YOU affected by CVE-2006-4251?

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

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