Virus Definition on a RedHat Linux installation of Symantec Protection Engine 7.5 fail with Result Code: 0x80012000. Here is a sample of what the /opt/SYMCScan/bin/definitions/AntiVirus/Logs/lux.log looks like:

12:21:09.820559 [Finalize Session - START]
12:21:09.820803     Result Code: 0x00010000
12:21:09.820860     Result Message: OK
12:21:09.820908     Component Status Changes:
12:21:09.820963         None
12:21:09.821007 [Finalize Session - END]
12:21:09.941349 [Session Results - START]
12:21:09.941477     Session Result Code: 0x00010000
12:21:09.941532     Session Result Message: OK
12:21:09.941577     [Component Result - START]
12:21:09.941638         Component ID: {BAE8FC84-53DC-11E1-8A6B-005056A9534A}
12:21:09.941712         Display Name: SPE 7.5 AV Definitions for x86-linux
12:21:09.941766         PVL: SPE 7.5 AV Definitions for x86-linux_MicroDefsB.CurDefs_SymAllLanguages
12:21:09.941817         Result Code: 0x00010000
12:21:09.941860         Result Message: OK
12:21:09.941955         [Package Result - START]
12:21:09.942002             File: 1432716628jtun_csapilinencful.m35
12:21:09.942060             Result Code: 0x80012000
12:21:09.942103             Result Message: UNKNOWN
12:21:09.942145         [Package Result - END]
12:21:09.942187     [Component Result - END]
12:21:09.942230 [Session Results - END]
12:21:09.942271 [Session Summary - START]
12:21:09.942312     Components: 1
12:21:09.942366     Packages:   1
12:21:09.942430     Success:    0
12:21:09.942473     Fail:       1
12:21:09.942528 [Session Summary - END]

This issue can be cause by the service account user not having the expected rights to system components.

Please verify the the user account used by Symantec Protection Engine does not have read access to the /etc/groups, the user account is locked.  The /etc/groups should have the default rights of 644.