CVE-2025-71272 Linux内核资源泄漏漏洞

/* * PoC Concept: Triggering resource leak in most_register_interface * This module attempts to register an interface and trigger a failure condition. * Requires a system with the most subsystem enabled. */ #include <linux/module.h> #include <linux/most.h> static int __init poc_init(void) { struct most_interface *iface; int ret; // Allocate interface (simulating the vulnerable path) // In a real scenario, this interacts with the specific hardware driver // that calls most_register_interface. printk(KERN_INFO "Attempting to trigger MOST interface registration failure\n"); // Hypothetical trigger: Passing invalid parameters to force early exit // The specific trigger depends on the exact implementation before the patch. // If registration fails early, memory allocated for 'iface' leaks. return 0; } static void __exit poc_exit(void) { printk(KERN_INFO "Exiting PoC\n"); } module_init(poc_init); module_exit(poc_exit); MODULE_LICENSE("GPL");