CVE-2025-71071 Linux内核MediaTek IOMMU驱动use-after-free漏洞

// PoC concept for CVE-2025-71071 // This vulnerability requires specific MediaTek hardware and kernel configuration #include <linux/module.h> #include <linux/platform_device.h> MODULE_LICENSE("GPL"); MODULE_AUTHOR("Security Researcher"); MODULE_DESCRIPTION("CVE-2025-71071 PoC Trigger"); // Trigger conditions: // 1. MediaTek IOMMU hardware present // 2. larb device not yet bound to driver // 3. Trigger IOMMU probe deferral // 4. Access freed larb device reference static int __init cve_2025_71071_init(void) { // Simulate probe deferral scenario // In real exploitation, this requires specific hardware // and timing conditions to trigger the UAF pr_info("CVE-2025-71071: MediaTek IOMMU UAF trigger\n"); return 0; } static void __exit cve_2025_71071_exit(void) { pr_info("CVE-2025-71071: Module unloaded\n"); } module_init(cve_2025_71071_init); module_exit(cve_2025_71071_exit); /* * Note: This is a conceptual PoC. Actual exploitation requires: * - MediaTek SoC with IOMMU support * - Specific device tree configuration * - Precise timing to trigger race condition * - Kernel debugging to confirm UAF access */