CVE-2026-34863 华为文件系统越界写入漏洞

#include <stdio.h> #include <string.h> // Simulated vulnerable function in file system void vulnerable_fs_operation(char *input, int len) { char buffer[32]; // Fixed size buffer // Vulnerability: No bounds check on length before memcpy // Out-of-bounds write occurs here if len > 32 memcpy(buffer, input, len); printf("Operation processed.\n"); } int main() { // Malicious input larger than buffer size char exploit_data[64]; memset(exploit_data, 'A', 64); // Triggering the vulnerability // Requires high privileges to access this specific FS call vulnerable_fs_operation(exploit_data, 64); return 0; }