CVE-2018-20340 · cross-distro fix matrix

CVE-2018-20340: Yubico libu2f-host 1.1.6 contains unchecked buffers in devs.c, which could enable a malicious token to exploit a buffer overflow. An attacker could use this to attempt to execute malicious code using a crafted USB device masquerading as a security token on a computer where the affected library is cu

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

Fix per ecosystem

Each block below is a distro release where CVE-2018-20340 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libu2f-host→ fixed in1.1.7-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libu2f-host
```

Debian bookworm

Source: Debian Security Tracker

libu2f-host→ fixed in1.1.7-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libu2f-host
```

Debian trixie

Source: Debian Security Tracker

libu2f-host→ fixed in1.1.7-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libu2f-host
```

Are YOU affected by CVE-2018-20340?

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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