bugGNU GRUB - Bugs: bug #56339, grub-set-default and grub-reboot...

 
 

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bug #56339: grub-set-default and grub-reboot utilities should check for MENU_ENTRY parameter validity

Submitter:  tot-to <tot_to>
Submitted:  Fri 17 May 2019 12:27:45 PM UTC
   
 
Category:  Configuration Severity:  Major
Priority:  5 - Normal Item Group:  None
Status:  None Privacy:  Public
Assigned to:  None Originator Name: 
Open/Closed:  Open Release:  other
Release:  Reproducibility:  None
Planned Release:  None

Fri 17 May 2019 12:27:45 PM UTC, original submission:  

In case of a typo in the MENU_ENTRY parameter both grub-set-default and grub-reboot utilities exit with no error message and with successful exit status. After the reboot grub will try to load the first menu entry found in grub.cfg

I believe it it a very serious issue. In case if the first entry refers to an unbootable configuration on a remote server, it leads to total loose of the system until physical access is possible!

Steps to reproduce:

# grub-set-default blahblahblah && echo success

Expected results:

1) A error message
2) No change of the default menu entry upon reboot

Actual results:

1) Message 'success' is printed
2) The default menu entry in changed to the fist entry in grub.cfg upon reboot

The same issue on my distribution's tracker:
https://bugs.gentoo.org/686054

 tot-to <tot_to>

 

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