CVE-2026-43174 Linux内核io_uring/zcrx资源管理漏洞

#include <liburing.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> /* * Conceptual Proof of Concept for CVE-2026-43174 * This code attempts to trigger the zcrx post-open error handling path. * Note: Actual exploitation requires a vulnerable kernel version. */ int main() { struct io_uring ring; int ret; // Initialize io_uring instance ret = io_uring_queue_init(32, &ring, 0); if (ret < 0) { perror("io_uring_queue_init"); return 1; } printf("io_uring initialized. Attempting to trigger zcrx error path...\n"); // In a real scenario, specific io_uring registration ops (IORING_REGISTER_ZCRX) // would be called here to setup the queue and subsequently trigger // the error condition that leads to the faulty context release. // This requires hardware support or emulation for zcrx. // Cleanup io_uring_queue_exit(&ring); return 0; }