Bug 1994096

Summary:	RFE: add patch to set grub boot_success flag on shutdown/reboot
Product:	Red Hat Enterprise Linux 8	Reporter:	Michael Boisvert <mboisver>
Component:	selinux-policy	Assignee:	Zdenek Pytela <zpytela>
Status:	CLOSED ERRATA	QA Contact:	Milos Malik <mmalik>
Severity:	medium	Docs Contact:	Khushbu Borole <kborole>
Priority:	high
Version:	8.5	CC:	hdegoede, lvrabec, mjahoda, mmalik, modehnal, rstrode, ssekidde, tpelka
Target Milestone:	rc	Keywords:	FutureFeature, Triaged
Target Release:	8.0	Flags:	pm-rhel: mirror+
Hardware:	x86_64
OS:	Linux
Whiteboard:
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.	Story Points:	---
Clone Of:	1914925	Environment:
Last Closed:	2021-11-09 19:43:59 UTC	Type:	Feature Request
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1914925
Bug Blocks:

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