CVE-2006-0459 · cross-distro fix matrix

CVE-2006-0459: flex.skl in Will Estes and John Millaway Fast Lexical Analyzer Generator (flex) before 2.5.33 does not allocate enough memory for grammars containing (1) REJECT statements or (2) trailing context rules, which causes flex to generate code that contains a buffer overflow that might allow context-depen

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

Fix per ecosystem

Each block below is a distro release where CVE-2006-0459 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

flex→ fixed in2.5.33-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y flex
```

Debian bookworm

Source: Debian Security Tracker

flex→ fixed in2.5.33-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y flex
```

Debian trixie

Source: Debian Security Tracker

flex→ fixed in2.5.33-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y flex
```

Are YOU affected by CVE-2006-0459?

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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Continuous monitoring beats manual checking

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