CVE-2026-23366 Linux内核空指针解引用漏洞

/* * PoC for CVE-2026-23366: Trigger NULL pointer dereference in drm/client * This is a conceptual representation based on the vulnerability description. * Triggering this requires specific conditions within the kernel subsystem. */ #include <linux/module.h> #include <linux/kernel.h> // Conceptual trigger logic void trigger_vulnerability() { // Simulate the scenario where kcalloc fails void *modes = NULL; // Represents failed allocation // The vulnerable code path jumps to 'out' and calls modes_destroy // modes_destroy(NULL); // This would cause the kernel panic printk(KERN_INFO "Attempting to trigger CVE-2026-23366 path..."); } int init_module(void) { trigger_vulnerability(); return 0; } void cleanup_module(void) { printk(KERN_INFO "Module unloaded."); }