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Bug 1994096 - RFE: add patch to set grub boot_success flag on shutdown/reboot
Summary: RFE: add patch to set grub boot_success flag on shutdown/reboot
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: selinux-policy
Version: 8.5
Hardware: x86_64
OS: Linux
high
medium
Target Milestone: rc
: 8.0
Assignee: Zdenek Pytela
QA Contact: Milos Malik
Khushbu Borole
URL:
Whiteboard:
Depends On: 1914925
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-08-16 17:47 UTC by Michael Boisvert
Modified: 2021-11-10 08:40 UTC (History)
8 users (show)

Fixed In Version: selinux-policy-3.14.3-79.el8
Doc Type: Bug Fix
Doc Text:
.SELinux policy did not allow GDM to set the GRUB `boot_success` flag Previously, SELinux policy did not allow the GNOME Display Manager (GDM) to set the GRUB `boot_success` flag during the power-off and reboot operations. Consequently, the GRUB menu appeared on the next boot. With this update, the SELinux policy introduces a new `xdm_exec_bootloader` boolean that allows the GDM to set the GRUB `boot_success` flag, and which is enabled by default. As a result, the GRUB boot menu is shown on the first boot and the flicker-free boot support feature works correctly.
Clone Of: 1914925
Environment:
Last Closed: 2021-11-09 19:43:59 UTC
Type: Feature Request
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-93760 0 None None None 2021-08-17 07:30:13 UTC
Red Hat Product Errata RHBA-2021:4420 0 None None None 2021-11-09 19:44:12 UTC

Comment 1 Ray Strode [halfline] 2021-08-16 18:05:32 UTC 
looks like we need to pull in:

https://github.com/fedora-selinux/selinux-policy/commit/43a040b61451c4bc7f0cfc0132843621f0359b52

(see the fedora bug here: https://bugzilla.redhat.com/show_bug.cgi?id=1750112 )
Comment 4 Zdenek Pytela 2021-08-23 13:56:13 UTC 
I suppose this commit can safely be backported:

commit 43a040b61451c4bc7f0cfc0132843621f0359b52
Author: Nikola Knazekova <nknazeko>
Date:   Tue Sep 10 18:47:52 2019 +0200

    Introduce xdm_manage_bootloader booelan

It moves some permissions to the boolean block, but the boolean is on by default.

+gen_tunable(xdm_manage_bootloader,true)
...
-fs_manage_dos_files(xdm_t)
...
+tunable_policy(`xdm_manage_bootloader',`
+    fs_manage_dos_files(xdm_t)
+    files_manage_boot_files(xdm_t)
Comment 13 errata-xmlrpc 2021-11-09 19:43:59 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (selinux-policy bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:4420
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