---
id: 1273
title: "Escalating a Windows driver registry bug to a kernel write primitive"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2026/05/05/c/c-checklist-challenges-solved/"
published_at: "2026-05-05 11:00"
tags: ["code-review", "privilege-escalation", "windows-security", "c", "command-injection", "windows-driver", "kernel-exploitation", "type-confusion", "testing-handbook"]
phying_url: "https://phying.com/item/1273"
lang: en
---

# Escalating a Windows driver registry bug to a kernel write primitive

## Summary

A walkthrough of two Testing Handbook C/C++ challenges: a Linux ping command injection via inet_aton quirks, and Windows driver registry type confusion escalating to a kernel write primitive.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2026-05-05 11:00
- **Original:** https://blog.trailofbits.com/2026/05/05/c/c-checklist-challenges-solved/
- **Phying News:** https://phying.com/item/1273