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(parent: d06d0b3) | patch
drivers: video: fbcon: fix NULL dereference in fbcon_cursor()
authorDu Cheng <ducheng2@gmail.com>
Fri, 12 Mar 2021 08:14:21 +0000 (16:14 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 7 Apr 2021 13:00:13 +0000 (15:00 +0200)
commit61f0c3e8098facbec81dcc32508d58c8611cb799
tree4d29c8df07b14eb341285260bd603cc4bbf9a461tree | snapshot
parentd06d0b3cf6260ef7c70680978f3868607b504e62commit | diff
drivers: video: fbcon: fix NULL dereference in fbcon_cursor()

commit 01faae5193d6190b7b3aa93dae43f514e866d652 upstream.

add null-check on function pointer before dereference on ops->cursor

Reported-by: syzbot+b67aaae8d3a927f68d20@syzkaller.appspotmail.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Du Cheng <ducheng2@gmail.com>
Link: https://lore.kernel.org/r/20210312081421.452405-1-ducheng2@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/video/fbdev/core/fbcon.c diff | blob | history
Domain: System / Kernel;