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2b09d5d364
linux/drivers/video/fbdev
History
Samuel Thibault 2b09d5d364 fbcon: Check font dimension limits 
blit_x and blit_y are u32, so fbcon currently cannot support fonts
larger than 32x32.

The 32x32 case also needs shifting an unsigned int, to properly set bit
31, otherwise we get "UBSAN: shift-out-of-bounds in fbcon_set_font",
as reported on:

http://lore.kernel.org/all/IA1PR07MB98308653E259A6F2CE94A4AFABCE9@IA1PR07MB9830.namprd07.prod.outlook.com
Kernel Branch: 6.2.0-rc5-next-20230124
Kernel config: https://drive.google.com/file/d/1F-LszDAizEEH0ZX0HcSR06v5q8FPl2Uv/view?usp=sharing
Reproducer: https://drive.google.com/file/d/1mP1jcLBY7vWCNM60OMf-ogw-urQRjNrm/view?usp=sharing

Reported-by: Sanan Hasanov <sanan.hasanov@Knights.ucf.edu>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Fixes: 2d2699d984 ("fbcon: font setting should check limitation of driver")
Cc: stable@vger.kernel.org
Tested-by: Miko Larsson <mikoxyzzz@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Helge Deller <deller@gmx.de>
2023-02-04 14:29:19 +01:00
..
aty fbdev: radeon: Use backlight helper 2023-01-09 09:57:50 +01:00
core fbcon: Check font dimension limits 2023-02-04 14:29:19 +01:00
geode fbdev: geode: don't build on UML 2022-12-14 20:01:51 +01:00
i810 fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
intelfb fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
kyro fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
matrox fbdev: matroxfb: G200eW: Increase max memory from 1 MB to 16 MB 2023-01-02 15:46:41 +01:00
mb862xx fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
mmp video: fbdev: mmp: replace usage of found with dedicated list iterator variable 2022-04-12 22:06:10 +02:00
nvidia fbdev: nvidia: Use backlight helper 2023-01-09 09:57:51 +01:00
omap fbdev: omapfb: use strscpy() to instead of strncpy() 2022-12-28 09:00:16 +01:00
omap2 fbdev: omapfb: Use kstrtobool() instead of strtobool() 2023-01-16 09:37:31 +01:00
riva fbdev: riva: Use backlight helper 2023-01-09 09:57:51 +01:00
savage fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
sis Linux 6.1-rc6 2022-11-24 11:05:43 +10:00
vermilion fbdev: vermilion: decrease reference count in error path 2022-12-14 20:01:50 +01:00
via fbdev: via: Fix error in via_core_init() 2022-12-14 20:01:50 +01:00
68328fb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
acornfb.c video: fbdev: acornfb: remove free_unused_pages() 2021-02-24 13:38:31 -08:00
acornfb.h
amba-clcd.c video: fbdev: amba-clcd: Fix refcount leak bugs 2022-07-26 08:56:22 +02:00
amifb.c video: fbdev: amiga: Simplify amifb_pan_display() 2022-07-18 07:54:17 +02:00
arcfb.c video: fbdev: arcfb: remove redundant initialization of variable err 2021-07-21 13:09:21 +02:00
arkfb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
asiliantfb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
atafb_iplan2p2.c
atafb_iplan2p4.c
atafb_iplan2p8.c
atafb_mfb.c
atafb_utils.h
atafb.c video: fbdev: atari: Remove backward bug-compatibility 2022-07-18 07:56:18 +02:00
atafb.h
atmel_lcdfb.c fbdev: atmel_lcdfb: Rework backlight status updates 2023-01-09 21:33:14 +01:00
au1100fb.c video: fbdev: au1100fb: Drop unnecessary NULL ptr check 2022-06-20 20:19:50 +02:00
au1100fb.h video: fbdev: au1100fb: Spelling s/palette/palette/ 2022-02-16 10:54:42 +01:00
au1200fb.c video: fbdev: au1200fb: Make use of dma_mmap_coherent() 2022-01-29 22:24:25 +01:00
au1200fb.h
broadsheetfb.c fbdev: Use pageref offset for deferred-I/O writeback 2022-05-03 16:04:22 +02:00
bt431.h
bt455.h
bw2.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
c2p_core.h
c2p_iplan2.c
c2p_planar.c
c2p.h
carminefb_regs.h
carminefb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
carminefb.h
cg3.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
cg6.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
cg14.c
chipsfb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
cirrusfb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
clps711x-fb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
cobalt_lcdfb.c
controlfb.c fbdev: controlfb: fix spelling mistake "paramaters"->"parameters" 2022-12-14 20:01:50 +01:00
controlfb.h
cyber2000fb.c Linux 6.1-rc6 2022-11-24 11:05:43 +10:00
cyber2000fb.h
da8xx-fb.c fbdev: da8xx-fb: add missing regulator_disable() in fb_probe 2022-12-14 20:01:50 +01:00
dnfb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
edid.h
efifb.c Merge drm/drm-next into drm-misc-next 2022-06-20 18:21:25 +02:00
ep93xx-fb.c fbdev: ep93xx-fb: Add missing clk_disable_unprepare in ep93xxfb_probe() 2022-12-14 20:01:50 +01:00
ffb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
fm2fb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
fsl-diu-fb.c video: fbdev: fsl-diu-fb: remove unneeded variable 'res' 2020-10-17 08:23:14 +02:00
g364fb.c
gbefb.c fbdev: gbefb: Convert sysfs snprintf to sysfs_emit 2022-10-18 10:28:41 +02:00
goldfishfb.c video: fbdev: goldfishfb: Fix defined but not used warning 2020-12-08 18:34:50 +01:00
grvga.c video: fbdev: Replace HTTP links with HTTPS ones 2020-07-20 11:47:29 +02:00
gxt4500.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
hecubafb.c fbdev: Rename pagelist to pagereflist for deferred I/O 2022-05-03 16:04:22 +02:00
hgafb.c video: hgafb: correctly handle card detect failure during probe 2021-05-21 15:04:05 +02:00
hitfb.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
hpfb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
hyperv_fb.c drm for 6.2: 2022-12-13 11:59:58 -08:00
i740_reg.h
i740fb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
imsttfb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
imxfb.c fbdev: imxfb: Remove redundant dev_err() call 2022-10-08 15:20:08 +02:00
Kconfig fbdev: make offb driver tristate 2022-12-27 22:01:45 +01:00
leo.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
macfb.c video: fbdev: Replace HTTP links with HTTPS ones 2020-07-20 11:47:29 +02:00
macmodes.c
macmodes.h
Makefile ARM: omap1: move lcd_dma code into omapfb driver 2022-04-21 15:00:45 +02:00
maxinefb.c
metronomefb.c fbdev: Use pageref offset for deferred-I/O writeback 2022-05-03 16:04:22 +02:00
mx3fb.c fbdev: mx3fb: Use backlight helper 2023-01-09 09:57:50 +01:00
n411.c
neofb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
ocfb.c video: fbdev: ocfb: add const to of_device_id 2022-01-29 22:24:25 +01:00
offb.c video: fbdev: offb: Include missing linux/platform_device.h 2022-07-28 16:22:12 +10:00
p9100.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
platinumfb.c video: fbdev: aty/matrox/...: Prepare cleanup of powerpc's asm/prom.h 2022-04-04 08:55:23 +02:00
platinumfb.h
pm2fb.c fbdev: pm2fb: fix missing pci_disable_device() 2022-12-14 20:01:50 +01:00
pm3fb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
pmag-aa-fb.c
pmag-ba-fb.c
pmagb-b-fb.c
ps3fb.c powerpc/ps3: make system bus's remove and shutdown callbacks return void 2020-12-04 01:01:22 +11:00
pvr2fb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
pxa3xx-gcu.c video: fbdev: pxa3xx-gcu: Fix integer overflow in pxa3xx_gcu_write 2022-06-20 20:12:17 +02:00
pxa3xx-gcu.h
pxa3xx-regs.h ARM: pxa: move regs-lcd.h into driver 2022-04-19 16:29:03 +02:00
pxa168fb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
pxa168fb.h
pxafb.c fbdev: pxafb: Remove unnecessary print function dev_err() 2022-12-14 20:01:50 +01:00
pxafb.h
q40fb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
s1d13xxxfb.c video: fbdev: s1d13xxxfb: Fix kernel-doc and set but not used warnings 2020-11-29 22:51:07 +01:00
s3c2410fb-regs-lcd.h fbdev: s3c2410fb: remove mach header dependency 2020-08-20 17:48:12 +02:00
s3c2410fb.c fbdev: s3c2410fb: remove mach header dependency 2020-08-20 17:48:12 +02:00
s3c2410fb.h
s3c-fb.c drm for 5.18-rc1 2022-03-24 16:19:43 -07:00
s3fb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
sa1100fb.c video: fbdev: sa1100fb: Remove unused sa1100fb_setup() 2022-07-18 07:54:18 +02:00
sa1100fb.h ARM/fbdev: sa11x0: Switch to use GPIO descriptors 2020-04-17 15:50:11 +02:00
sbuslib.c fbdev: sbuslib: remove compat_alloc_user_space usage 2020-09-25 16:34:50 +02:00
sbuslib.h
sh7760fb.c
sh_mobile_lcdcfb.c fbdev: sh_mobile_lcdcfb: use sysfs_emit() to instead of scnprintf() 2022-12-14 20:01:51 +01:00
sh_mobile_lcdcfb.h
simplefb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
skeletonfb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
sm501fb.c fbdev: sm501fb: Convert sysfs snprintf to sysfs_emit 2022-10-18 10:22:28 +02:00
sm712.h
sm712fb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
smscufx.c fbdev: smscufx: fix error handling code in ufx_usb_probe 2022-12-14 20:01:50 +01:00
ssd1307fb.c fbdev: ssd1307fb: Drop duplicate NULL checks for PWM APIs 2022-12-14 20:01:48 +01:00
sstfb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
sticore.h parisc/stifb: Keep track of hardware path of graphics card 2022-06-04 15:47:03 +02:00
stifb.c fbdev: stifb: Fall back to cfb_fillrect() on 32-bit HCRX cards 2022-10-18 10:22:28 +02:00
sunxvr500.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
sunxvr1000.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
sunxvr2500.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
tcx.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
tdfxfb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
tgafb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
tmiofb.c
tridentfb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
udlfb.c fbdev: udlfb: Remove redundant initialization to variable identical 2022-10-08 15:20:08 +02:00
uvesafb.c fbdev: uvesafb: use sysfs_emit() to instead of scnprintf() 2022-12-14 20:01:51 +01:00
valkyriefb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
valkyriefb.h
vesafb.c video: fbdev: vesafb: Fix a use-after-free due early fb_info cleanup 2022-05-28 19:26:56 +02:00
vfb.c
vga16fb.c fbdev: vga16fb: Add missing MODULE_DEVICE_TABLE() entry 2022-10-08 15:20:09 +02:00
vt8500lcdfb.c video: vt8500lcdfb: fix fallthrough warning 2020-04-17 15:50:08 +02:00
vt8500lcdfb.h
vt8623fb.c fbdev: Add support for the nomodeset kernel parameter 2022-11-16 13:26:25 +01:00
w100fb.c video: fbdev: w100fb: Reset global state 2022-01-29 22:24:26 +01:00
w100fb.h
wm8505fb_regs.h
wm8505fb.c
wmt_ge_rops.c video: fbdev: wmt_ge_rops: Fix function not declared warnings 2020-12-08 18:34:36 +01:00
wmt_ge_rops.h
xen-fbfront.c printk, xen: fbfront: create/use safe function for forcing preferred 2022-12-02 11:25:02 +01:00
xilinxfb.c fbdev: xilinxfb: Make xilinxfb_release() return void 2022-10-20 08:36:41 +02:00