linux/drivers/tty/vt
Jeongjun Park f956052e00 vt: prevent kernel-infoleak in con_font_get()
font.data may not initialize all memory spaces depending on the implementation
of vc->vc_sw->con_font_get. This may cause info-leak, so to prevent this, it
is safest to modify it to initialize the allocated memory space to 0, and it
generally does not affect the overall performance of the system.

Cc: stable@vger.kernel.org
Reported-by: syzbot+955da2d57931604ee691@syzkaller.appspotmail.com
Fixes: 05e2600cb0 ("VT: Bump font size limitation to 64x128 pixels")
Signed-off-by: Jeongjun Park <aha310510@gmail.com>
Link: https://lore.kernel.org/r/20241010174619.59662-1-aha310510@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-10-11 08:27:36 +02:00
..
.gitignore .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
conmakehash.c tty: vt: conmakehash: remove non-portable code printing comment header 2024-08-13 11:06:29 +02:00
consolemap.c drivers/tty/vt: use standard array-copy-functions 2023-11-25 07:23:16 +00:00
cp437.uni tty: fix up a few remaining files without SPDX identifiers 2019-04-04 18:48:43 +02:00
defkeymap.c_shipped tty/vt: defkeymap.c_shipped, little unification with loadkeys 2022-06-10 13:34:17 +02:00
defkeymap.map tty: fix up a few remaining files without SPDX identifiers 2019-04-04 18:48:43 +02:00
keyboard.c vt: keyboard: Use led_set_brightness() in LED trigger activate() callback 2024-06-04 14:00:53 +02:00
Makefile vt: remove superfluous CONFIG_HW_CONSOLE 2024-01-27 19:03:51 -08:00
selection.c tty: vt: fix up kernel-doc 2024-01-27 18:08:55 -08:00
vc_screen.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
vt_ioctl.c tty: vt: pass vc_resize_user as a parameter 2024-01-27 18:08:52 -08:00
vt.c vt: prevent kernel-infoleak in con_font_get() 2024-10-11 08:27:36 +02:00