# Linux Kernel Security & Vulnerability Remediation
## Overview
Specialized work in identifying, analyzing, and remediating vulnerabilities in the Linux kernel, focusing on memory safety, privilege escalation, and system integrity.
## Key Areas
### Memory Safety
- **Use-After-Free (UAF)** detection and mitigation
- **Buffer overflow** analysis and fixes
- **Race condition** identification in kernel subsystems
- **NULL pointer dereference** prevention
### Vulnerability Analysis
- Static analysis using tools like Coverity and Clang Static Analyzer
- Dynamic analysis with KASAN, UBSAN, and fuzzing techniques
- CVE research and patch development
- Security impact assessment and exploitation analysis
### Kernel Hardening
- Implementation of kernel security features (KASLR, Stack Protector)
- SELinux and AppArmor policy development
- Secure boot and trusted boot implementation
- Kernel module signing and verification
## Remediation Process
1. **Identification**: Using automated tools and manual code review
2. **Analysis**: Understanding root cause and potential impact
3. **Development**: Creating minimal, maintainable patches
4. **Testing**: Comprehensive testing across architectures
5. **Documentation**: Clear CVE descriptions and security advisories
## Tools & Technologies
- GDB, QEMU for debugging and testing
- Syzkaller for kernel fuzzing
- AddressSanitizer (KASAN) for memory error detection
- Git for patch management and collaboration
## Impact
- Multiple CVE discoveries and patches
- Contributions to upstream kernel security
- Security hardening implementations for production systems