From: Helge Deller <deller@gmx.de>
To: geert@linux-m68k.org, dri-devel@lists.freedesktop.org,
daniel.vetter@ffwll.ch, linux-fbdev@vger.kernel.org
Subject: [PATCH v2 0/4] fbcon: Fixes for screen resolution changes - round 2
Date: Fri, 1 Jul 2022 22:23:48 +0200 [thread overview]
Message-ID: <20220701202352.559808-1-deller@gmx.de> (raw)
This series fixes possible out-of-bound memory accesses when users trigger
screen resolutions changes with invalid input parameters, e.g. reconfigures
screen which is smaller than the current font size, or if the virtual screen
size is smaller than the physical screen size.
Changes in v2:
- don't fixup wrong xy_vres values, but instead print warning.
- add Reviewed-by tags, minor variable name fixes
Helge Deller (4):
fbcon: Disallow setting font bigger than screen size
fbcon: Prevent that screen size is smaller than font size
fbmem: Prevent invalid virtual screen sizes in fb_set_var()
fbcon: Use fbcon_info_from_console() in fbcon_modechange_possible()
drivers/video/fbdev/core/fbcon.c | 33 ++++++++++++++++++++++++++++++++
drivers/video/fbdev/core/fbmem.c | 16 +++++++++++++++-
include/linux/fbcon.h | 4 ++++
3 files changed, 52 insertions(+), 1 deletion(-)
--
2.35.3
next reply other threads:[~2022-07-01 20:24 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-01 20:23 Helge Deller [this message]
2022-07-01 20:23 ` [PATCH v2 1/4] fbcon: Disallow setting font bigger than screen size Helge Deller
2022-07-01 20:23 ` [PATCH v2 2/4] fbcon: Prevent that screen size is smaller than font size Helge Deller
2022-07-03 8:50 ` Geert Uytterhoeven
2022-07-03 8:50 ` Geert Uytterhoeven
2022-07-01 20:23 ` [PATCH v2 3/4] fbmem: Prevent invalid virtual screen sizes in fb_set_var() Helge Deller
2022-07-03 8:55 ` Geert Uytterhoeven
2022-07-03 8:55 ` Geert Uytterhoeven
2022-07-03 13:53 ` Helge Deller
2022-07-03 13:53 ` Helge Deller
2022-07-03 14:41 ` Geert Uytterhoeven
2022-07-03 14:41 ` Geert Uytterhoeven
2022-07-04 8:38 ` Helge Deller
2022-07-04 8:38 ` Helge Deller
2022-07-01 20:23 ` [PATCH v2 4/4] fbcon: Use fbcon_info_from_console() in fbcon_modechange_possible() Helge Deller
2022-07-01 20:25 ` [PATCH v2 0/4] fbcon: Fixes for screen resolution changes - round 2 Helge Deller
-- strict thread matches above, loose matches on Subject: below --
2022-07-01 20:22 Helge Deller
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