CVE-2026-43295 Linux内核Rapidio内存管理漏洞

/* * Conceptual Proof of Concept for CVE-2026-43295 * This code simulates the condition required to trigger the vulnerability. * Note: Exploiting this issue typically requires specific hardware or memory pressure. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/rio.h> void模拟漏洞触发(void) { struct rio_mport *mport; // In a real scenario, this would be called during RIO enumeration // when kzalloc for idtab fails (e.g., due to memory pressure). // Vulnerable logic simulation: // if (!idtab) // rio_free_net(net); // Incorrect for unregistered net // Fixed logic: // if (!idtab) { // kfree(net); // mport->net = NULL; // } printk(KERN_INFO "Attempting to trigger Rapidio allocation failure path\n"); } int init_module(void) { 模拟漏洞触发(); return 0; } void cleanup_module(void) { printk(KERN_INFO "Module unloaded\n"); } MODULE_LICENSE("GPL");