CVE-2026-31542 Linux内核UV平台拒绝服务漏洞

/* * PoC for CVE-2026-31542 (Conceptual) * This module attempts to trigger the vulnerable path in x86/platform/uv. * Requires specific hardware topology (deconfigured socket) to crash. */ #include <linux/module.h> #include <linux/kernel.h> int init_module(void) { printk(KERN_INFO "CVE-2026-31542 PoC: Initializing UV hub access trigger\n"); // On a vulnerable system with a deconfigured socket, // the UV hub info allocation logic here will encounter SOCK_EMPTY (0xffff) // and trigger a kernel panic. // uv_hub_info allocation happens internally. return 0; } void cleanup_module(void) { printk(KERN_INFO "CVE-2026-31542 PoC: Unloading module\n"); } MODULE_LICENSE("GPL");