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| author | Sergey Senozhatsky <sergey.senozhatsky@gmail.com> | 2016-12-07 14:44:31 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-12-15 08:49:22 -0800 |
| commit | e286b6c16758adc77e960dd679073200b539803a (patch) | |
| tree | c85f78978e38fddad486fb8a2df83a16baf12f85 /virt/Makefile | |
| parent | a0bd6aa097a4c9cf920b66686515bcb174bed531 (diff) | |
zram: restrict add/remove attributes to root only
commit 5c7e9ccd91b90d87029261f8856294ee51934cab upstream.
zram hot_add sysfs attribute is a very 'special' attribute - reading
from it creates a new uninitialized zram device. This file, by a
mistake, can be read by a 'normal' user at the moment, while only root
must be able to create a new zram device, therefore hot_add attribute
must have S_IRUSR mode, not S_IRUGO.
[akpm@linux-foundation.org: s/sence/sense/, reflow comment to use 80 cols]
Fixes: 6566d1a32bf72 ("zram: add dynamic device add/remove functionality")
Link: http://lkml.kernel.org/r/20161205155845.20129-1-sergey.senozhatsky@gmail.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reported-by: Steven Allen <steven@stebalien.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'virt/Makefile')
0 files changed, 0 insertions, 0 deletions