CVE-2026-43275 Linux内核UFS驱动竞态条件漏洞

/* * Conceptual Proof of Concept for CVE-2026-43275 * This demonstrates the logic to trigger the race condition. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/device.h> static int __init trigger_ufs_race_init(void) { // Step 1: Simulate setting RPM level to 0 (UFS_PM_LVL_0) // In a real scenario, this involves runtime_pm APIs. printk(KERN_INFO "CVE-2026-43275: Setting RPM level to 0"); // Step 2: Trigger an exception event (e.g., UFS device error) // This queues work to the exception handling workqueue. printk(KERN_INFO "CVE-2026-43275: Triggering UFS exception event"); // Step 3: Initiate system suspend immediately // If the patch is not applied, the exception handling work // will not be flushed, leading to a crash upon hardware access. printk(KERN_INFO "CVE-2026-43275: Initiating suspend sequence"); return 0; } static void __exit trigger_ufs_race_exit(void) { printk(KERN_INFO "CVE-2026-43275: Unloading module"); } module_init(trigger_ufs_race_init); module_exit(trigger_ufs_race_exit); MODULE_LICENSE("GPL");