CVE-2025-66322 华为相机框架模块多线程竞争条件漏洞

// CVE-2025-66322 PoC - Multi-thread Race Condition in Camera Framework // This PoC demonstrates triggering race condition in camera framework module // Note: Requires high privileges and local access to the device #include <pthread.h> #include <stdio.h> #include <unistd.h> // Simulated camera framework shared resource volatile int camera_state = 0; volatile int resource_lock = 0; void* camera_operation_thread(void* arg) { // Simulate race condition in camera framework for (int i = 0; i < 1000; i++) { // Missing proper synchronization int temp = camera_state; usleep(1); // Small delay to increase race window camera_state = temp + 1; // Concurrent access to locked resource if (resource_lock == 0) { resource_lock = 1; // Critical section without proper mutex protection usleep(rand() % 100); resource_lock = 0; } } return NULL; } int trigger_race_condition() { pthread_t threads[10]; printf("Starting race condition trigger for CVE-2025-66322\n"); // Create multiple threads to maximize race condition probability for (int i = 0; i < 10; i++) { pthread_create(&threads[i], NULL, camera_operation_thread, NULL); } // Wait for all threads to complete for (int i = 0; i < 10; i++) { pthread_join(threads[i], NULL); } printf("Final camera state: %d (expected: 10000)\n", camera_state); printf("Race condition triggered - availability impact detected\n"); return 0; } int main() { trigger_race_condition(); return 0; }