Cyberdudebivash

        Linux Kernel 6.9+ Compromised: New 'FlipSwitch' Hooking Technique Bypasses Syscall Defenses     By CyberDudeBivash • October 02, 2025, 08:21 AM IST • Kernel Exploit & Threat Analysis   The security of the Linux operating system hinges on the integrity of its kernel and the system call (syscall) interface that separates user space from the kernel. For years, defenders and attackers have been locked in a battle over this critical boundary. A new, sophisticated post-exploitation technique, which we are dubbing **"FlipSwitch,"** represents a major escalation in this fight. This novel method, reportedly affecting Linux kernels 6.9 and later, allows a rootkit to hook critical kernel functions in a way that is designed to be completely invisible to modern security defenses that rely on syscall tracing and integrity monitoring. This is not a vulnerability that grants root access; it's a weapon used by an attacker *after* they have root to b...