Ondrej Mosnacek 5881fa8dc2 debugfs: fix security_locked_down() call for SELinux ... When (ia->ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID)) is zero, then the SELinux implementation of the locked_down hook might report a denial even though the operation would actually be allowed. To fix this, make sure that security_locked_down() is called only when the return value will be taken into account (i.e. when changing one of the problematic attributes). Note: this was introduced by commit 5496197f9b ("debugfs: Restrict debugfs when the kernel is locked down"), but it didn't matter at that time, as the SELinux support came in later. Fixes: 59438b4647 ("security,lockdown,selinux: implement SELinux lockdown") Cc: stable <stable@vger.kernel.org> Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com> Link: https://lore.kernel.org/r/20210507125304.144394-1-omosnace@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-05-18 18:05:59 +02:00
..
file.c	Scheduler updates for this cycle are:	2021-04-28 13:33:57 -07:00
inode.c	debugfs: fix security_locked_down() call for SELinux	2021-05-18 18:05:59 +02:00
internal.h	debugfs: Add access restriction option	2020-07-23 17:10:25 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00