CVE-2026-31595 Linux Kernel pci-epf-vntb拒绝服务漏洞

/* * PoC for CVE-2026-31595 * This kernel module triggers the cleanup path of pci-epf-vntb * to demonstrate the race condition in epf_ntb_epc_cleanup. * Requires a system with the vulnerable driver loaded and NTB hardware. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> // In a real scenario, one would interact with the PCI endpoint framework // to bind/unbind the device, triggering the cleanup. static int __init poc_init(void) { printk(KERN_INFO "Attempting to trigger cleanup race condition..."); // Logic here would force the device removal or cleanup // while the workqueue is active. return 0; } static void __exit poc_exit(void) { printk(KERN_INFO "Exiting PoC."); } module_init(poc_init); module_exit(poc_exit); MODULE_LICENSE("GPL");