CVE-2026-43300: Linux内核空指针解引用漏洞

// Simulated PoC for CVE-2026-43300 // This demonstrates the logic flaw in jdi_panel_dsi_remove() #include <stdio.h> #include <stdlib.h> struct jdi_panel { int base; void *backlight; }; void jdi_panel_disable(struct jdi_panel *jdi) { // This line causes the crash if jdi is NULL printf("Disabling backlight at %p\n", jdi->backlight); } void jdi_panel_dsi_remove(struct jdi_panel *jdi) { if (!jdi) { printf("jdi is NULL, detaching DSI...\n"); // Buggy code: does not return here } // Continues even if jdi is NULL jdi_panel_disable(jdi); } int main() { printf("Triggering CVE-2026-43300 logic...\n"); jdi_panel_dsi_remove(NULL); return 0; }