CVE-2019-3842 · cross-distro fix matrix

CVE-2019-3842: In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polk

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

Fix per ecosystem

Each block below is a distro release where CVE-2019-3842 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

systemd→ fixed in241-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y systemd
```

Debian bookworm

Source: Debian Security Tracker

systemd→ fixed in241-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y systemd
```

Debian trixie

Source: Debian Security Tracker

systemd→ fixed in241-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y systemd
```

Are YOU affected by CVE-2019-3842?

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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