CVE-2012-0871 · cross-distro fix matrix

CVE-2012-0871: The session_link_x11_socket function in login/logind-session.c in systemd-logind in systemd, possibly 37 and earlier, allows local users to create or overwrite arbitrary files via a symlink attack on the X11 user directory in /run/user/.

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

Fix per ecosystem

Each block below is a distro release where CVE-2012-0871 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

systemd→ fixed in43-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y systemd
```

Debian bookworm

Source: Debian Security Tracker

systemd→ fixed in43-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y systemd
```

Debian trixie

Source: Debian Security Tracker

systemd→ fixed in43-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y systemd
```

Are YOU affected by CVE-2012-0871?

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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