CVE-2025-20740: MediaTek WLAN STA驱动竞态条件导致越界读取信息泄露

// CVE-2025-20740 PoC - MediaTek WLAN STA Driver Race Condition // This PoC demonstrates the concept of triggering a race condition // Note: Actual exploitation requires specific timing and kernel access #include <stdio.h> #include <pthread.h> #include <unistd.h> #define ITERATIONS 10000 volatile int shared_counter = 0; volatile int trigger_flag = 0; void* writer_thread(void* arg) { for (int i = 0; i < ITERATIONS; i++) { // Simulate wlan STA driver buffer write operation shared_counter = 1; trigger_flag = 1; // Small window for race condition __asm__ __volatile__("" ::: "memory"); shared_counter = 0; trigger_flag = 0; } return NULL; } void* reader_thread(void* arg) { int local_value; for (int i = 0; i < ITERATIONS; i++) { // Simulate potential out-of-bounds read scenario if (trigger_flag) { local_value = shared_counter; // In real vulnerability, this could read beyond buffer if (local_value != 1 && local_value != 0) { printf("Potential OOB read detected: %d\n", local_value); } } } return NULL; } int main() { pthread_t t1, t2; printf("CVE-2025-20740 PoC - MediaTek WLAN STA Race Condition\n"); printf("Simulating race condition in driver buffer access\n"); pthread_create(&t1, NULL, writer_thread, NULL); pthread_create(&t2, NULL, reader_thread, NULL); pthread_join(t1, NULL); pthread_join(t2, NULL); printf("PoC completed. Check for anomalous reads.\n"); return 0; }