CVE-2012-4561 · cross-distro fix matrix

CVE-2012-4561: The (1) publickey_make_dss, (2) publickey_make_rsa, (3) signature_from_string, (4) ssh_do_sign, and (5) ssh_sign_session_id functions in keys.c in libssh before 0.5.3 free "an invalid pointer on an error path," which might allow remote attackers to cause a denial of service (crash) via unspecified v

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

Fix per ecosystem

Each block below is a distro release where CVE-2012-4561 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libssh→ fixed in0.5.3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libssh
```

Debian bookworm

Source: Debian Security Tracker

libssh→ fixed in0.5.3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libssh
```

Debian trixie

Source: Debian Security Tracker

libssh→ fixed in0.5.3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libssh
```

Are YOU affected by CVE-2012-4561?

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