Zheyu Ma 52461d387c video: fbdev: s3fb: Check the size of screen before memset_io() ... [ Upstream commit 6ba592fa01 ] In the function s3fb_set_par(), the value of 'screen_size' is calculated by the user input. If the user provides the improper value, the value of 'screen_size' may larger than 'info->screen_size', which may cause the following bug: [ 54.083733] BUG: unable to handle page fault for address: ffffc90003000000 [ 54.083742] #PF: supervisor write access in kernel mode [ 54.083744] #PF: error_code(0x0002) - not-present page [ 54.083760] RIP: 0010:memset_orig+0x33/0xb0 [ 54.083782] Call Trace: [ 54.083788] s3fb_set_par+0x1ec6/0x4040 [ 54.083806] fb_set_var+0x604/0xeb0 [ 54.083836] do_fb_ioctl+0x234/0x670 Fix the this by checking the value of 'screen_size' before memset_io(). Fixes: a268422de8 ("fbdev driver for S3 Trio/Virge") Signed-off-by: Zheyu Ma <zheyuma97@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-08-17 14:42:17 +02:00
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backlight	- New Device Support	2022-03-25 14:01:23 -07:00
console	parisc/stifb: Fix fb_is_primary_device() only available with CONFIG_FB_STI	2022-06-29 09:04:40 +02:00
fbdev	video: fbdev: s3fb: Check the size of screen before memset_io()	2022-08-17 14:42:17 +02:00
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display_timing.c	…
hdmi.c	…
of_display_timing.c	video: fbdev: of: display_timing: Remove a redundant zeroing of memory	2022-04-04 08:55:23 +02:00
of_videomode.c	…
vgastate.c	…
videomode.c	…