CVE-2026-23464 Linux内核内存泄漏漏洞

/* * Conceptual PoC for CVE-2026-23464 Memory Leak * This snippet demonstrates the vulnerable logic in mpfs_sys_controller_probe. */ #include <linux/errno.h> #include <linux/module.h> #include <linux/of.h> #include <linux/slab.h> struct mpfs_sys_controller { int dummy; }; // Simulating the vulnerable function logic static int vulnerable_probe(struct device *dev) { struct mpfs_sys_controller *sys_controller; // Step 1: Allocate memory sys_controller = kzalloc(sizeof(*sys_controller), GFP_KERNEL); if (!sys_controller) return -ENOMEM; // Step 2: Call function that might fail // of_get_mtd_device_by_node returns NULL or error here if (!of_get_mtd_device_by_node(dev->of_node)) { // VULNERABILITY: Returns immediately without freeing sys_controller return -ENODEV; } // Normal cleanup... kfree(sys_controller); return 0; }