bash script fails with 'Permission denied' error due to IMA policy.

Issue

• A bash script fails to execute with a Permission denied error, despite having the necessary permissions.
  • The issue specifically happens after loading IMA policy appraise func=BPRM_CHECK appraise_type=imasig
  • Or executing ima-setup --policy=/usr/share/ima/policies/01-appraise-executable-and-lib-signatures command.
• Example:

# ls -lZ sleep.sh 
-rwxr-xr-x. 1 root root unconfined_u:object_r:admin_home_t:s0 20 Jul  6 22:57 sleep.sh

# cat sleep.sh 
#!/bin/bash
sleep 2

# ./sleep.sh 
-bash: ./sleep.sh: /bin/bash: bad interpreter: Permission denied

# cat sleep.sh 
sleep 2

# ./sleep.sh 
-bash: ./sleep.sh: Permission denied