struct file *sock_alloc_file(struct socket *sock, int flags, const char *dname)
{
	struct qstr name = { .name = "" };
	struct path path;
	struct file *file;

	if (dname) {
		name.name = dname;
		name.len = strlen(name.name);
	} else if (sock->sk) {
		name.name = sock->sk->sk_prot_creator->name;
		name.len = strlen(name.name);
	}
	path.dentry = d_alloc_pseudo(sock_mnt->mnt_sb, &name);
	if (unlikely(!path.dentry))
		return ERR_PTR(-ENOMEM);
	path.mnt = mntget(sock_mnt);

	d_instantiate(path.dentry, SOCK_INODE(sock));
	SOCK_INODE(sock)->i_fop = &socket_file_ops;

	file = alloc_file(&path, FMODE_READ | FMODE_WRITE,
		  &socket_file_ops);
	if (unlikely(IS_ERR(file))) {
		/* drop dentry, keep inode */
		ihold(path.dentry->d_inode);
		path_put(&path);
		return file;
	}

	sock->file = file;
	file->f_flags = O_RDWR | (flags & O_NONBLOCK);
	file->private_data = sock;
	return file;
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.