CVE-2026-26071 EVerest堆释放后重用漏洞

// Conceptual PoC for Data Race in EVerest (CVE-2026-26071) // This simulates the race condition between EVCCID update and OCPP events. #include <iostream> #include <thread> #include <string> #include <chrono> // Global shared resource simulating the vulnerable string std::string shared_session_id = "initial_id"; void evccid_update_thread() { // Simulates EVCCID update events modifying the string for (int i = 0; i < 1000; ++i) { shared_session_id = "evcc_update_" + std::to_string(i); // Simulate processing delay std::this_thread::sleep_for(std::chrono::microseconds(1)); } } void ocpp_auth_thread() { // Simulates OCPP authorization events reading the string for (int i = 0; i < 1000; ++i) { // Potential Use-After-Free or Data Race here std::string local_copy = shared_session_id; if (local_copy.empty()) { // Handle error or crash simulation std::cout << "Error: Invalid session ID detected." << std::endl; } std::this_thread::sleep_for(std::chrono::microseconds(1)); } } int main() { std::cout << "Starting PoC for CVE-2026-26071..." << std::endl; // Create threads representing concurrent events std::thread t1(evccid_update_thread); std::thread t2(ocpp_auth_thread); t1.join(); t2.join(); std::cout << "PoC execution finished." << std::endl; return 0; }