wiz.io/blog· May 13, 2026· by Merav Bar

Fragnesia: Linux Kernel Local Privilege Escalation via ESP-in-TCP

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A new page-cache corruption vulnerability in the Dirty Frag family enables unprivileged local attackers to achieve root
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.