CVE-2026-111061

CVE-2026-111061 · russh agent server converts constraint records into unbounded never-rolled-back tasks

Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.

russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. Prior to 0.64.1, the agent server spawns a separate long-lived task for every SSH_AGENT_CONSTRAIN_LIFETIME record in a constrained add-key request. The loop accepts repeated lifetime records, clones the key blob into each task, and does not roll back tasks when later constraint parsing fails. An attacker that can speak the agent protocol locally or through agent forwarding can exhaust memory and tasks until the agent process is starved or terminated, denying SSH agent service. This issue is fixed in version 0.64.1.

CVSS 4.3 · Moyenne · EPSS 0,3% · Code d’exploitation public · Correctif disponible

Publication

2026-10-19T16:30:24.445Z

Mise à jour

2026-10-19T18:29:47.486Z

Pile logicielle: system

Vérifiez votre serveur →