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Quarantine-mode based live patching for zero downtime safety-critical systems

Imanol Mugarza


  • DIRECTORS: Jorge Parra and Eduardo Jacob


In this PhD thesis, a novel software framework, called Cetratus, is proposed for safety-critical systems, which enables the dynamic update of application components. The fundamental characteristic is the quarantine-mode, where the initialization and the execution of the software patch is isolated. As a result, patching failures do not lead to any unsafe scenario or disruption of the service. To this end, partitioning techniques are employed. The proposed solution is able to enhance current security protection measures without system shutdown. Cetratus is aligned with the industrial IEC 61508 and IEC 62443 standards.

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