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From: Helge Deller <deller@gmx.de>
To: daniel.vetter@ffwll.ch, linux-fbdev@vger.kernel.org,
	dri-devel@lists.freedesktop.org, geert@linux-m68k.org
Subject: [PATCH 0/5] fbcon: Fixes for screen resolution changes - round 2
Date: Wed, 29 Jun 2022 22:00:19 +0200	[thread overview]
Message-ID: <20220629200024.187187-1-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.

Helge Deller (5):
  fbcon: Disallow setting font bigger than screen size
  fbcon: Fix up user-provided virtual 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 | 15 ++++++++++++++-
 include/linux/fbcon.h            |  4 ++++
 3 files changed, 51 insertions(+), 1 deletion(-)

--
2.35.3


             reply	other threads:[~2022-06-29 20:00 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-29 20:00 Helge Deller [this message]
2022-06-29 20:00 ` [PATCH 1/5] fbcon: Disallow setting font bigger than screen size Helge Deller
2022-06-30 18:51   ` Geert Uytterhoeven
2022-06-30 19:26     ` Helge Deller
2022-06-29 20:00 ` [PATCH 2/5] fbcon: Fix up user-provided virtual " Helge Deller
2022-06-30 19:00   ` Geert Uytterhoeven
2022-06-30 19:30     ` Helge Deller
2022-06-30 19:36       ` Geert Uytterhoeven
2022-06-30 19:46         ` Helge Deller
2022-06-30 20:00           ` Geert Uytterhoeven
2022-06-30 20:10             ` Helge Deller
2022-07-01  7:28               ` Geert Uytterhoeven
2022-07-01  9:30                 ` Helge Deller
2022-07-01 14:52                   ` Geert Uytterhoeven
2022-07-01 20:13                     ` Helge Deller
2022-06-29 20:00 ` [PATCH 3/5] fbcon: Prevent that screen size is smaller than font size Helge Deller
2022-06-30 19:09   ` Geert Uytterhoeven
2022-06-30 19:18     ` Geert Uytterhoeven
2022-06-30 19:40     ` Helge Deller
2022-06-29 20:00 ` [PATCH 4/5] fbmem: Prevent invalid virtual screen sizes in fb_set_var() Helge Deller
2022-06-30 19:11   ` Geert Uytterhoeven
2022-06-30 19:16     ` Helge Deller
2022-06-30 19:38       ` Geert Uytterhoeven
2022-07-01 14:49         ` Geert Uytterhoeven
2022-07-02 12:05           ` Michel Dänzer
2022-07-02 16:26             ` Helge Deller
2022-06-29 20:00 ` [PATCH 5/5] fbcon: Use fbcon_info_from_console() in fbcon_modechange_possible() Helge Deller
2022-06-30 19:21   ` Geert Uytterhoeven

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