## https://sploitus.com/exploit?id=B8E38525-9931-5E69-BAE1-8AF5F3C9C975
# CVE-2026-31431 Checker ("Copy Fail")
Detection tool for Linux kernel AF_ALG AEAD use-after-free vulnerability.
## Compile
```bash
gcc -o cve-2026-31431 CVE-2026-31431.c
```
## Run
```bash
./cve-2026-31431
```
## Results
- **OK (AF_ALG socket failed)** - Not vulnerable, AF_ALG interface disabled
- **OK (bind failed)** - Not vulnerable, AEAD interface unavailable
- **OK (sent N bytes)** - Successfully sent, system not vulnerable
- **Warning: vulnerable AF_ALG interface accessible!** - System may be vulnerable
## Warning
Use only in test environments with proper authorization.
## Disclaimer
This tool is provided for **security research and defensive purposes only**. Users must:
- Have explicit authorization to test target systems
- Use only on systems they own or have permission to assess
- Comply with all applicable laws and regulations
Unauthorized access to computer systems is illegal. The authors assume no liability for misuse or damages.
## License
MIT License - see LICENSE file for details.