From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756706AbcBXD7U (ORCPT ); Tue, 23 Feb 2016 22:59:20 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:51461 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756633AbcBXDyn (ORCPT ); Tue, 23 Feb 2016 22:54:43 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Insu Yun , Theodore Tso Subject: [PATCH 3.10 07/54] ext4: fix potential integer overflow Date: Tue, 23 Feb 2016 19:33:24 -0800 Message-Id: <20160224033352.860141245@linuxfoundation.org> X-Mailer: git-send-email 2.7.1 In-Reply-To: <20160224033352.613205610@linuxfoundation.org> References: <20160224033352.613205610@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Insu Yun commit 46901760b46064964b41015d00c140c83aa05bcf upstream. Since sizeof(ext_new_group_data) > sizeof(ext_new_flex_group_data), integer overflow could be happened. Therefore, need to fix integer overflow sanitization. Signed-off-by: Insu Yun Signed-off-by: Theodore Ts'o Signed-off-by: Greg Kroah-Hartman --- fs/ext4/resize.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -181,7 +181,7 @@ static struct ext4_new_flex_group_data * if (flex_gd == NULL) goto out3; - if (flexbg_size >= UINT_MAX / sizeof(struct ext4_new_flex_group_data)) + if (flexbg_size >= UINT_MAX / sizeof(struct ext4_new_group_data)) goto out2; flex_gd->count = flexbg_size;