Podcast: How eBPF Empowers Developers to Observe Inside the Linux Kernel in a Safe and Unintrusive Way

2026-06-22 · Source: InfoQ · Field: Technology & Digital — Software Development & Engineering, Cybersecurity & Data Privacy, Cloud Computing & IT Infrastructure · Depth: Advanced, extended

Summary

eBPF, or extended Berkeley Packet Filter, has evolved from its packet filtering origins into a robust, safe mechanism for extending the Linux kernel, with emerging support for Windows. This technology, championed by companies like Isovalent (now Isovalent at Cisco), allows developers to implement deep observability and "front-foot" security enforcement without the risks of traditional kernel modules or the slow upstreaming process. A strict "verifier" acts as a security guardrail, ensuring eBPF programs cannot crash the kernel or access invalid memory. Tools like Cilium leverage eBPF for networking, while Tetragon provides real-time security by intercepting syscalls to block threats such as buffer overflows before execution, and offers extensive observability into file systems, storage layers, and device drivers without requiring application instrumentation. The community is also exploring AI-driven policy generation for automated vulnerability protection.

Key takeaway

For DevOps Engineers or AI Security Engineers managing Linux or Windows infrastructure, eBPF offers a powerful, safe alternative to traditional kernel modifications for enhanced observability and "front-foot" security. You should explore eBPF-based tools like Cilium for networking and Tetragon for real-time threat interception and auditing, especially when dealing with critical CVEs or needing deep system insights without application instrumentation. Prioritize open-source eBPF projects with strong human maintainer communities over those relying heavily on AI-generated code to ensure long-term support and authenticity.

Key insights

eBPF safely extends kernel functionality for deep observability and proactive security without traditional kernel modules.

Principles

• eBPF's verifier ensures kernel stability.
• Proactive enforcement beats reactive monitoring.
• Observability without code changes is possible.

Method

eBPF programs attach to kernel probes, syscalls, or user probes (uprobes) as pre-hooks or post-hooks, allowing inspection and modification of execution flow before or after kernel operations.

In practice

• Monitor GPU activity via Nvidia CUDA drivers.
• Block unauthorized file deletion with Tetragon policies.
• Live-patch CVEs like buffer overflows at syscall level.

Topics

• eBPF
• Linux Kernel
• Observability
• Kernel Security
• Cilium
• Tetragon
• DevOps

Code references

• microsoft/ebpf-for-windows

Best for: CTO, VP of Engineering/Data, MLOps Engineer, DevOps Engineer, Software Engineer, AI Security Engineer

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Editorial summary, takeaway, and curation by AIssential. Original article published by InfoQ.