If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.

Linux smaug 4.12.0 #1 SMP Sun Jul 2 22:53:09 PDT 2017 x86_64 x86_64 x86_64 GNU/Linux

GNU C               	5.4.0
GNU Make            	4.1
Binutils            	2.26.1
Util-linux          	2.27.1
Mount               	2.27.1
Module-init-tools   	22
E2fsprogs           	1.42.13
Reiserfsprogs       	3.6.24
Pcmciautils         	018
PPP                 	2.4.7
Nfs-utils           	1.2.8
Linux C Library     	2.23
Dynamic linker (ldd)	2.23
Linux C++ Library   	6.0.21
Procps              	3.3.10
Net-tools           	1.60
Kbd                 	1.15.5
Console-tools       	1.15.5
Sh-utils            	8.25
Udev                	229
Wireless-tools      	30
Modules Loaded      	aesni_intel aes_x86_64 ahci async_memcpy async_pq async_raid6_recov async_tx async_xor autofs4 binfmt_misc bluetooth bnep btbcm btintel btrtl btusb coretemp cp210x crc32_pclmul crct10dif_pclmul cryptd crypto_simd dca devlink drm drm_kms_helper e1000e ecdh_generic fb_sys_fops ftdi_sio ghash_clmulni_intel glue_helper hid hid_generic hid_logitech_dj hid_logitech_hidpp i2c_algo_bit input_leds intel_cstate intel_powerclamp intel_rapl intel_rapl_perf ioatdma ipmi_devintf ipmi_msghandler ipmi_si ipmi_ssif irqbypass isci joydev kvm kvm_intel libahci libcrc32c libsas linear lp lpc_ich mac_hid media mei mei_me mlx4_core mlx4_en mpt3sas msr multipath mxm_wmi nls_iso8859_1 nouveau nvme nvme_core nvram overlay parport parport_pc pcbc ppdev pps_core ptp raid0 raid10 raid1 raid456 raid6_pq raid_class rfcomm sb_edac scsi_transport_sas shpchp snd snd_hwdep snd_pcm snd_rawmidi snd_seq snd_seq_device snd_seq_midi snd_seq_midi_event snd_timer snd_usb_audio snd_usbmidi_lib soundcore sunrpc syscopyarea sysfillrect sysimgblt ttm uas usbhid usbserial usb_storage uvcvideo video videobuf2_core videobuf2_memops videobuf2_v4l2 videobuf2_vmalloc videodev wmi x86_pkg_temp_thermal xor