CVE-2026-43443: Linux内核AMD ACP驱动缺失时钟检查致崩溃

/* * PoC Concept: Triggering the vulnerable code path * This involves initializing the sound card where the clk_get fails. */ #include <linux/module.h> #include <linux/platform_device.h> // Simulating the vulnerable initialization flow static int vulnerable_init(struct device *dev) { struct clk *clk; // Vulnerability: clk_get return value not checked clk = clk_get(dev, "rt5682_mclk"); // If clk_get fails, clk is an error pointer. // The following dereference causes a Kernel Panic/Oops. // clk_prepare_enable(clk); return 0; }