rust-russh: Russh is a Rust SSH client and server library
CVE-2026-102824 is fixed in rust-russh on 1 platform by DEBIAN-CVE-2026-102824 (version 0.64.1-1), released October 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Russh is a Rust SSH client and server library. Prior to 0.63.0, the hybrid ML-KEM 768 and X25519 implementation in russh/src/kex/hybrid_mlkem.rs accepts an all-zero 32-byte peer X25519 public key in both server_dh and compute_shared_secret, forcing the X25519 contribution to the combined shared secret to zero. A malicious SSH peer can therefore make the combined secret depend only on ML-KEM, defeating the hybrid exchange's intended fallback protection if ML-KEM is later weakened. This issue is fixed in version 0.63.0.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| rust-russh · Debian 14 | 0.64.1-1 | DEBIAN-CVE-2026-102824 | Oct 16, 2026 |
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