int usbip_recv(struct socket *sock, void *buf, int size)
{
	int result;
	struct msghdr msg;
	struct kvec iov;
	int total = 0;

	/* for blocks of if (usbip_dbg_flag_xmit) */
	char *bp = buf;
	int osize = size;

	usbip_dbg_xmit("enter\n");

	if (!sock || !buf || !size) {
		pr_err("invalid arg, sock %p buff %p size %d\n", sock, buf,
		       size);
		return -EINVAL;
	}

	do {
		sock->sk->sk_allocation = GFP_NOIO;
		iov.iov_base    = buf;
		iov.iov_len     = size;
		msg.msg_name    = NULL;
		msg.msg_namelen = 0;
		msg.msg_control = NULL;
		msg.msg_controllen = 0;
		msg.msg_flags      = MSG_NOSIGNAL;

		result = kernel_recvmsg(sock, &msg, &iov, 1, size, MSG_WAITALL);
		if (result <= 0) {
			pr_debug("receive sock %p buf %p size %u ret %d total %d\n",
				 sock, buf, size, result, total);
			goto err;
		}

		size -= result;
		buf += result;
		total += result;
	} while (size > 0);

	if (usbip_dbg_flag_xmit) {
		if (!in_interrupt())
			pr_debug("%-10s:", current->comm);
		else
			pr_debug("interrupt  :");

		pr_debug("receiving....\n");
		usbip_dump_buffer(bp, osize);
		pr_debug("received, osize %d ret %d size %d total %d\n",
			 osize, result, size, total);
	}

	return total;

err:
	return result;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.