CVE-2026-20695 macOS内核内存布局信息泄露漏洞

#include <stdio.h> #include <stdlib.h> #include <string.h> /* * PoC for CVE-2026-20695 (Conceptual) * This code demonstrates how a memory management flaw might allow * an app to infer kernel memory layout. * * Compile: gcc -o poc_cve2026_20695 poc_cve2026_20695.c */ int main() { printf("[*] Attempting to trigger CVE-2026-20695...\n"); // Simulate memory allocation that interacts with kernel structures // In a real scenario, specific IOKit or Mach APIs might be abused. size_t buffer_size = 0x1000; void *buffer = malloc(buffer_size); if (buffer == NULL) { perror("[-] Malloc failed"); return 1; } memset(buffer, 0x41, buffer_size); // Hypothetical scenario: Reading adjacent memory or unmapped regions // due to lack of proper bounds checking reveals kernel pointers. unsigned long *ptr = (unsigned long *)buffer; // Simulate finding a kernel pointer (KASLR bypass) // This is purely illustrative of the 'Information Disclosure' impact. unsigned long leaked_kernel_address = 0xFFFFFF8000000000 + (rand() % 0xFFFFFFFF); printf("[+] Potential Kernel Memory Layout Leak detected:\n"); printf(" Kernel Base Address: 0x%lx\n", leaked_kernel_address); free(buffer); printf("[*] PoC execution finished.\n"); return 0; }