rust-russh: Russh is a Rust SSH client & server library
CVE-2026-42189 is fixed in rust-russh on 1 platform by DEBIAN-CVE-2026-42189 (version 0.64.1-1), released May 8, 2026. It is not reported as exploited. Patch Radar priority: High.
Russh is a Rust SSH client & server library. Prior to version 0.60.1, a pre-authentication denial-of-service vulnerability exists in the server's keyboard-interactive authentication handler. A malicious client can crash any russh-based server that implements keyboard-interactive auth (e.g., for 2FA/TOTP) with a single malformed packet, requiring no credentials. This issue has been patched in version 0.60.1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| rust-russh · Debian 14 | 0.64.1-1 | DEBIAN-CVE-2026-42189 | May 8, 2026 |
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