fbdev: fbcon: release buffer when fbcon_do_set_font() failed

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commit 3c3bfb8586 upstream.

syzbot is reporting memory leak at fbcon_do_set_font() [1], for
commit a5a923038d ("fbdev: fbcon: Properly revert changes when
vc_resize() failed") missed that the buffer might be newly allocated
by fbcon_set_font().

Link: https://syzkaller.appspot.com/bug?extid=25bdb7b1703639abd498 [1]
Reported-by: syzbot <syzbot+25bdb7b1703639abd498@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Tested-by: syzbot <syzbot+25bdb7b1703639abd498@syzkaller.appspotmail.com>
Fixes: a5a923038d ("fbdev: fbcon: Properly revert changes when vc_resize() failed")
CC: stable@vger.kernel.org # 5.15+
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Tetsuo Handa 2022-12-06 07:10:31 +09:00 • committed by Greg Kroah-Hartman

parent 9c9e8be758

commit a609bfc1e6

1 changed files with 2 additions and 1 deletions

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drivers/video/fbdev/core/fbcon.c

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