Errors in log file "pam_unix.so: wrong ELF class: ELFCLASS32"

Solution Verified - Updated -

Issue

Receiving the following errors continuously in logs

 su: PAM [error: /lib/security/pam_unix.so: wrong ELF class: ELFCLASS32] 
 su: PAM adding faulty module: /lib/security/pam_unix.so 
 su: PAM unable to dlopen(/lib/security/pam_unix.so) 
 su: PAM [error: /lib/security/pam_unix.so: wrong ELF class: ELFCLASS32]  

Environment

  • Red Hat Enterprise Linux 5/6
  • pam

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