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From: Helge Deller <deller@gmx.de>
To: dri-devel@lists.freedesktop.org, daniel.vetter@ffwll.ch,
	linux-fbdev@vger.kernel.org
Subject: [PATCH v4 0/3] fbcon: Fixes for screen resolution changes
Date: Sun, 26 Jun 2022 01:27:00 +0200	[thread overview]
Message-ID: <20220625232703.401821-1-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.

v4:
- merged former patch #2 and #3
- added more Reviewed-by
- new patch #2 needs more testing. Note added to comit message that
  another patch needs to be backport as well.

Helge Deller (3):
  fbcon: Disallow setting font bigger than screen size
  fbcon: Prevent that screen size is smaller than font size
  fbmem: Prevent invalid virtual screen sizes

 drivers/video/fbdev/core/fbcon.c | 32 ++++++++++++++++++++++++++++++++
 drivers/video/fbdev/core/fbmem.c | 10 +++++++++-
 include/linux/fbcon.h            |  4 ++++
 3 files changed, 45 insertions(+), 1 deletion(-)

--
2.35.3


             reply	other threads:[~2022-06-25 23:27 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-25 23:27 Helge Deller [this message]
2022-06-25 23:27 ` [PATCH v4 1/3] fbcon: Disallow setting font bigger than screen size Helge Deller
2022-06-25 23:27 ` [PATCH v4 2/3] fbcon: Prevent that screen size is smaller than font size Helge Deller
2022-06-26  8:50   ` Daniel Vetter
2022-06-26  8:50     ` Daniel Vetter
2022-06-26  8:57     ` Helge Deller
2022-06-26  8:57       ` Helge Deller
2022-06-25 23:27 ` [PATCH v4 3/3] fbmem: Prevent invalid virtual screen sizes Helge Deller

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