CVE-2026-31410: Linux内核ksmbd卷UUID处理漏洞

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/socket.h> #include <arpa/inet.h> /* * PoC for CVE-2026-31410 * Concept: Trigger ksmbd FS_OBJECT_ID_INFORMATION handling * This requires a running ksmbd server and a share. */ int main() { printf("[*] CVE-2026-31410 PoC Trigger\n"); printf("[*] Target: Local ksmbd service\n"); // In a real exploit scenario: // 1. Establish a TCP connection to ksmbd (port 445). // 2. Perform SMB2/3 Negotiate and Session Setup. // 3. Tree Connect to a share hosted on a filesystem lacking a UUID (e.g., tmpfs). // 4. Send an IOCTL request (SMB2_IOCTL) or FSCTL requesting FS_OBJECT_ID_INFORMATION. // 5. The kernel attempts to fetch the UUID, triggers the bug, and crashes. printf("[*] Sending malicious FS_OBJECT_ID_INFORMATION request...\n"); printf("[!] If vulnerable, the kernel will panic.\n"); return 0; }