From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:44488 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936317AbeBUNLN (ORCPT ); Wed, 21 Feb 2018 08:11:13 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nicolas Pitre , Bartlomiej Zolnierkiewicz Subject: [PATCH 4.15 120/163] console/dummy: leave .con_font_get set to NULL Date: Wed, 21 Feb 2018 13:49:09 +0100 Message-Id: <20180221124536.747679607@linuxfoundation.org> In-Reply-To: <20180221124529.931834518@linuxfoundation.org> References: <20180221124529.931834518@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nicolas Pitre commit 724ba8b30b044aa0d94b1cd374fc15806cdd6f18 upstream. When this method is set, the caller expects struct console_font fields to be properly initialized when it returns. Leave it unset otherwise nonsensical (leaked kernel stack) values are returned to user space. Signed-off-by: Nicolas Pitre Cc: stable@vger.kernel.org Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Greg Kroah-Hartman --- drivers/video/console/dummycon.c | 1 - 1 file changed, 1 deletion(-) --- a/drivers/video/console/dummycon.c +++ b/drivers/video/console/dummycon.c @@ -67,7 +67,6 @@ const struct consw dummy_con = { .con_switch = DUMMY, .con_blank = DUMMY, .con_font_set = DUMMY, - .con_font_get = DUMMY, .con_font_default = DUMMY, .con_font_copy = DUMMY, };