CVE-2023-25136 · cross-distro fix matrix

CVE-2023-25136: OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-pa

Affects 2 Linux releases across 2 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2023-25136 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

openssh→ fixed in1:9.2p1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openssh
```

Debian trixie

Source: Debian Security Tracker

openssh→ fixed in1:9.2p1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openssh
```

Are YOU affected by CVE-2023-25136?

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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