CVE-2026-31545 Linux内核NFC驱动拒绝服务漏洞

/* * PoC for CVE-2026-31545 * Trigger: Loading the nxp-nci driver and operating GPIOs on an I2C expander. * Result: Kernel WARNING in dmesg. */ #include <linux/module.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> // Conceptual trigger simulation // In a real scenario, specific hardware interaction is required. static int __init poc_init(void) { // This simulates the condition where the driver attempts to set GPIO values // while the GPIO is on an I2C expander that requires sleeping. pr_info("CVE-2026-31545 PoC: Initializing NXP-NCI interaction...\n"); // Hypothetical call that would trigger the bug in vulnerable versions // gpiod_set_value(dev->firmware_gpio, 1); return 0; } static void __exit poc_exit(void) { pr_info("CVE-2026-31545 PoC: Exiting.\n"); } module_init(poc_init); module_exit(poc_exit); MODULE_LICENSE("GPL");