CVE-2026-23352 Linux内核EFI内存泄漏漏洞

/* * PoC for CVE-2026-23352 (Memory Leak Impact Verification) * This code checks the system's available memory to demonstrate the leak. * The vulnerability is triggered during the kernel boot process. */ #include <stdio.h> #include <stdlib.h> #include <string.h> void analyze_memory() { FILE *fp; char line[256]; unsigned long mem_total = 0, mem_available = 0; fp = fopen("/proc/meminfo", "r"); if (fp == NULL) { perror("Failed to open /proc/meminfo"); return; } while (fgets(line, sizeof(line), fp)) { if (strstr(line, "MemTotal:")) sscanf(line, "MemTotal: %lu kB", &mem_total); if (strstr(line, "MemAvailable:")) sscanf(line, "MemAvailable: %lu kB", &mem_available); } fclose(fp); printf("[+] Memory Analysis:\n"); printf(" Total Memory: %lu MB\n", mem_total / 1024); printf(" Available Memory: %lu MB\n", mem_available / 1024); // On affected small instances (e.g., 512MB RAM), losing ~140MB is significant if (mem_total > 0 && (mem_total - mem_available) > (100 * 1024)) { printf("[!] Alert: Significant memory gap detected. Possible CVE-2026-23352 leak.\n"); } } int main() { analyze_memory(); return 0; }