GNU 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 |
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Items that depend on this one: None found
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Corresponding source code
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