Linux LD_PRELOAD/LD_AUDIT library: Permission denied with path in Detection mode

[noproto]

Files that do not exist are improperly returning "Permission denied" instead of "No such file or directory".

Erroneous output:

root@host:~# /example
WhiteBeam: /example: Permission denied
root@host:~# ./example
WhiteBeam: ./example: Permission denied

In syslog:

| Detection: /usr/bin/bash executed ./example (VerifyCanExecute)                                                                       | 1     |
| Detection: /usr/bin/bash executed /example (VerifyCanExecute)                                                                        | 1     |

Expected output:

root@host:~# /example
-bash: /example: No such file or directory
root@host:~# ./example
-bash: ./example: No such file or directory

(No syslog lines)

This is an issue in one of the Actions used by the Execution hooks provided by the Essential whitelist.

[noproto]

Causes service --status-all to return WhiteBeam: /usr/local/sbin/grep: Permission denied on each line. Also: zcat with gzip's path.