ptr-yudai https://blog.hatena.ne.jp/ptr-yudai/ CTFするぞ https://ptr-yudai.hatenablog.com/ Exploit TL;DR By flipping the R/W bit in the page table entry of a mapped file (e.g., /etc/passwd), you can gain write access to the file. What is Dirty Pagetable What is Dirty Pageflags Flipping R/W PoC Conclusion What is Dirty Pagetable Dirty Pagetable is a powerful exploitation technique that targets hea… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fptr-yudai.hatenablog.com%2Fentry%2F2025%2F09%2F14%2F180326" title="Dirty Pageflags: Revisiting PTE Exploitation in Linux - CTFするぞ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://cdn-ak.f.st-hatena.com/images/fotolife/p/ptr-yudai/20250914/20250914175615.png Hatena Blog https://hatena.blog 2025-09-14 18:03:26 rich https://ptr-yudai.hatenablog.com/entry/2025/09/14/180326 1.0 100%