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19ab233989
linux/drivers/video/fbdev/core
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Phillip Potter 19ab233989 fbdev: zero-fill colormap in fbcmap.c 
Use kzalloc() rather than kmalloc() for the dynamically allocated parts
of the colormap in fb_alloc_cmap_gfp, to prevent a leak of random kernel
data to userspace under certain circumstances.

Fixes a KMSAN-found infoleak bug reported by syzbot at:
https://syzkaller.appspot.com/bug?id=741578659feabd108ad9e06696f0c1f2e69c4b6e

Reported-by: syzbot+47fa9c9c648b765305b9@syzkaller.appspotmail.com
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210331220719.1499743-1-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10 11:12:08 +02:00
..
bitblit.c fbcon: Drop EXPORT_SYMBOL 2020-11-17 11:00:43 +01:00
cfbcopyarea.c
cfbfillrect.c
cfbimgblt.c
fb_cmdline.c video/fbdev: refactor video= cmdline parsing 2019-02-08 19:24:47 +01:00
fb_ddc.c
fb_defio.c video: fb_defio: preserve user fb_ops 2019-12-03 11:10:19 +02:00
fb_draw.h
fb_notify.c video: fbdev: core: Fix kernel-doc warnings in fbmon + fb_notify 2020-12-08 18:31:56 +01:00
fb_sys_fops.c
fbcmap.c fbdev: zero-fill colormap in fbcmap.c 2021-04-10 11:12:08 +02:00
fbcon_ccw.c fbcon: Drop EXPORT_SYMBOL 2020-11-17 11:00:43 +01:00
fbcon_cw.c fbcon: Drop EXPORT_SYMBOL 2020-11-17 11:00:43 +01:00
fbcon_rotate.c fbcon: Drop EXPORT_SYMBOL 2020-11-17 11:00:43 +01:00
fbcon_rotate.h
fbcon_ud.c fbcon: Drop EXPORT_SYMBOL 2020-11-17 11:00:43 +01:00
fbcon.c drivers: video: fbcon: fix NULL dereference in fbcon_cursor() 2021-03-23 15:15:17 +01:00
fbcon.h drm-misc-fixes for v5.9: 2020-10-06 12:38:28 +10:00
fbcvt.c
fbmem.c drm: remove pgprot_decrypted() before calls to io_remap_pfn_range() 2020-11-10 17:19:14 +01:00
fbmon.c video: fbdev: core: Fix kernel-doc warnings in fbmon + fb_notify 2020-12-08 18:31:56 +01:00
fbsysfs.c fbmem: pull fbcon_update_vcs() out of fb_set_var() 2020-08-04 07:37:23 +02:00
Makefile fbdev: remove object duplication in Makefile 2020-01-15 17:31:52 +01:00
modedb.c fbdev: Ditch fb_edid_add_monspecs 2019-07-23 14:17:22 +02:00
softcursor.c fbcon: Drop EXPORT_SYMBOL 2020-11-17 11:00:43 +01:00
svgalib.c
syscopyarea.c
sysfillrect.c
sysimgblt.c
tileblit.c fbcon: Drop EXPORT_SYMBOL 2020-11-17 11:00:43 +01:00