CVE-2025-5372 · cross-distro fix matrix

CVE-2025-5372: A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenl

Affects 4 Linux releases across 4 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-5372 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libssh→ fixed in0.9.8-0+deb11u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libssh
```

Debian bookworm

Source: Debian Security Tracker

libssh→ fixed in0.10.6-0+deb12u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libssh
```

Debian trixie

Source: Debian Security Tracker

libssh→ fixed in0.11.2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libssh
```

Alpine edge

Source: Alpine secdb

libssh→ fixed in0.11.2-r0
```
apk update && apk add --upgrade libssh
```

Are YOU affected by CVE-2025-5372?

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.

curl https://mindsparkstack.com/scan.sh | bash

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