rust-russh: Russh is a Rust SSH client & server library
CVE-2026-73429 is fixed in rust-russh on 1 platform by DEBIAN-CVE-2026-73429 (version 0.64.1-1), released August 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Russh is a Rust SSH client & server library. Prior to 0.62.4, a malicious SSH server can crash a russh client session with a malformed KEX_ECDH_REPLY containing a server ephemeral value that is not 32 bytes long. The client-side Curve25519Kex::compute_shared_secret function in russh/src/kex/curve25519.rs passes the decoded exchange.server_ephemeral value to clone_from_slice without validating its length, causing a deterministic panic before the server host key is verified. The panic terminates the spawned client session task and surfaces as a JoinError, while the embedding process normally remains running. This issue is fixed in version 0.62.4.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| rust-russh · Debian 14 | 0.64.1-1 | DEBIAN-CVE-2026-73429 | Aug 12, 2026 |
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