dmidecode is not working - /dev/mem: Permission denied - Red Hat Customer Portal

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Issue

dmidecode or other commands which require access to /dev/mem fail even for the root user

# dmidecode 
  # dmidecode 2.11
  /dev/mem: Permission denied

This is expected for non root users but root should be able to run dmidecode

Environment

Observed on RHEL 5.7
Observed on dmidecode-2.12-1.el5
- This issue is not dependent on the kernel or dmidecode version
Security software and libraries are installed: in this situation CA Technologies AccessControl (seos)

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