HyperOS-Directory-Traversal-Analysis/
│
├── 📁 .github/                     # GitHub 社区与 CI/CD 工作流
│   ├── 📁 ISSUE_TEMPLATE/          # Bug 与功能请求模板
│   │   ├── 📄 config.yml           # Issue 模板配置与链接
│   │   ├── 📄 hata-raporu.yml      # Bug 报告表单 (YAML Forms)
│   │   └── 📄 ozellik-istegi.yml   # 功能请求表单 (YAML Forms)
│   ├── 📁 workflows/
│   │   ├── 📄 rust.yml             # Rust CI — 构建、测试与 lint 管道
│   │   ├── 📄 pages.yml            # GitHub Pages 自动发布
│   │   ├── 📄 security.yml         # 安全扫描 (cargo-audit, CodeQL)
│   │   └── 📄 docs.yml             # 文档 lint 与链接检查
│   ├── 📄 dependabot.yml           # 自动依赖更新
│   ├── 📄 FUNDING.yml              # GitHub Sponsors 配置
│   ├── 📄 mlc_config.json          # Markdown 链接检查器设置
│   ├── 📄 PULL_REQUEST_TEMPLATE.md
│   └── 📄 SECURITY.md              # 安全策略
│
├── 📁 assets/                      # Logo 与图像文件
│   └── 🖼️ isu-logo.png             # 伊斯坦布尔大学标识
│
│
├── 📁 docs/                        # 技术文档
│   ├── 📄 zafiyet-analizi.md       # 漏洞分析与 CVSS 评分
│   ├── 📄 mimari-analiz.md         # HyperOS AVCodec 架构图
│   ├── 📄 cozum-onerileri.md       # 修复建议与 C++ 补丁
│   └── 📄 README.md                # 文档指南索引
│
├── 📁 research_results/            # 作业研究结果
│   ├── 📄 Cevaplarım.md            # 10 个高级问题的答案
│   ├── 📄 SORULAR.md               # 作业问题
│   ├── 📄 yorum.md                 # 个人分析与评论
│   ├── 📄 simple.md                # 简单解释（50 步）
│   ├── 🌐 infographic.html         # 可视化漏洞指南
│   └── 📄 README.md                # 研究结果索引
│
├── 📁 poc_python/                  # Python 分析工具（参考）
│   ├── 📄 exploit.py               # CVE-2025-2844 目录遍历 PoC
│   └── 📄 requirements.txt
│
├── 📁 poc_rust/                    # Rust UAF 模拟（主 PoC）
│   ├── 📁 src/
│   │   └── 📄 main.rs              # 不安全 Rust 实现的 UAF 模拟逻辑
│   └── 📄 Cargo.toml
│
├── 🌐 simulation.html              # 交互式 Web 模拟面板（5 个场景）
├── 📄 README.md                    # 本文件
├── 📄 CODE_OF_CONDUCT.md           # 社区行为准则
├── 📄 CONTRIBUTING.md              # 贡献指南
├── 📄 TODO.md                      # 任务跟踪列表
└── ⚖️  LICENSE                      # MIT 许可证

[主线程]    processFrameAsync() → 启动工作线程
                      ↓
                release() 被调用 → 内存被释放 ⚠️
                      ↓
[工作线程] 继续访问已释放的内存 → UAF 💥

# 克隆项目
git clone https://github.com/kkaanozturk/HyperOS-Directory-Traversal-Analysis.git
cd HyperOS-Directory-Traversal-Analysis/poc_rust

# 以 Release 模式编译
cargo build --release

# Windows
.\target\release\cve_2025_21082_uaf_poc.exe --mode vulnerable --verbose

# Linux / macOS
./target/release/cve_2025_21082_uaf_poc --mode vulnerable --verbose

🔬 CVE-2025-21082: HyperOS AVCodec UAF PoC
Mode: vulnerable

⚠️  Running vulnerable scenario...
CodecContext allocated in Arc<Mutex<T>>
🧵 Starting worker thread...
🗑️  Main thread releasing codec context (UAF trigger)...
Memory corrupted to simulate UAF
🔄 Worker thread accessing codec context...
🚨 UAF detected! Magic number corrupted: 0xFEEDFACE
💥 UAF vulnerability triggered on frame 0!

🚨 Vulnerable scenario completed - UAF demonstrated!
⚠️  In a real exploit, this could lead to RCE

# Windows
.\target\release\cve_2025_21082_uaf_poc.exe --mode patched --verbose

# Linux / macOS
./target/release/cve_2025_21082_uaf_poc --mode patched --verbose

🔬 CVE-2025-21082: HyperOS AVCodec UAF PoC
Mode: patched

✅ Running patched scenario...
CodecContext allocated safely in Arc<Mutex<T>>
🧵 Starting worker thread...
⏳ Waiting for worker thread to complete (patch applied)...
🔄 Worker thread processing frames safely...
✅ Frame 0 processed successfully
✅ Frame 1 processed successfully
✅ Frame 2 processed successfully
✅ Frame 3 processed successfully
✅ Frame 4 processed successfully
✅ Worker thread completed safely
🗑️  Safely releasing codec context...

✅ Patched scenario completed - No UAF occurred!
🛡️  Proper synchronization prevents the vulnerability

# 在项目根目录下
py -m http.server 8000

# 在浏览器中打开：http://localhost:8000/simulation.html

cd poc_python
py -m pip install -r requirements.txt
py exploit.py -u http://hedef:5000 -f etc/shadow

class AVCodecContext {
    void processFrameAsync() {
        worker_thread_ = std::thread([this]() {
            buffer_->processFrame(); // Worker thread çalışıyor
        });
        // ❌ join() yok — race condition!
    }

    void release() {
        delete buffer_; // ❌ Worker hâlâ çalışırken bellek serbest bırakılıyor
        buffer_ = nullptr;
    }
};

class AVCodecContext {
    void release() {
        shutdown_requested_ = true;
        worker_cv_.notify_all();

        if (worker_thread_.joinable()) {
            worker_thread_.join(); // ✅ Thread tamamlanana kadar bekle
        }

        delete buffer_; // ✅ Güvenli temizlik
    }
};

unsafe fn process_frame(&mut self) -> bool {
    // Magic number bozulduysa UAF gerçekleşmiş demektir
    if self.magic != 0xDEADBEEF {
        println!("🚨 UAF tespit edildi! Magic: 0x{:08X}", self.magic);
        return false;
    }
    self.frame_counter += 1;
    true
}