CVE-2026-23358 Linux内核amdgpu逻辑错误漏洞

/* * PoC Concept for CVE-2026-23358 * This code simulates the vulnerable logic in the amdgpu driver. * Triggering this requires specific hardware failure simulation. */ #include <linux/module.h> #include <linux/list.h> // Mock structure representing the hive struct amdgpu_hive { struct list_head node; int is_initialized; }; void vulnerable_slot_reset(void) { struct amdgpu_hive *hive = NULL; int reset_status = -1; // Simulate reset failure // In the vulnerable code, hive is not initialized if reset fails if (reset_status != 0) { goto out; } hive = kmalloc(sizeof(*hive), GFP_KERNEL); if (hive) { INIT_LIST_HEAD(&hive->node); hive->is_initialized = 1; } out: // Vulnerability: Accessing uninitialized hive pointer if (hive && !list_empty(&hive->node)) { printk(KERN_INFO "Hive is active\n"); } // If reset failed, hive is NULL, but logic might assume it is valid // leading to a kernel panic or undefined behavior. if (hive) { kfree(hive); } } int init_module(void) { vulnerable_slot_reset(); return 0; } void cleanup_module(void) {} MODULE_LICENSE("GPL");