Diagram of gVisor Sentry intercepting syscalls between application and host kernel.

Inside gVisor: How User-Space Kernels Sandbox Containers at the Syscall Boundary

gVisor moves the Linux kernel into userspace to sandbox containers at the syscall boundary, trading raw throughput for a dramatically smaller attack surface.

September 4, 2026 · 9 min · 1766 words · martinuke0
Feedback