From patchwork Wed May 25 10:31:29 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prasad Pandit X-Patchwork-Id: 9135093 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A3442607D7 for ; Wed, 25 May 2016 10:33:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 99BE1282BE for ; Wed, 25 May 2016 10:33:14 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8E93B282D4; Wed, 25 May 2016 10:33:14 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 18069282D8 for ; Wed, 25 May 2016 10:33:12 +0000 (UTC) Received: from localhost ([::1]:58801 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b5W7j-0001Fc-4t for patchwork-qemu-devel@patchwork.kernel.org; Wed, 25 May 2016 06:33:11 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40326) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b5W6S-0000Z8-KD for qemu-devel@nongnu.org; Wed, 25 May 2016 06:32:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b5W6Q-0002la-3u for qemu-devel@nongnu.org; Wed, 25 May 2016 06:31:51 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40455) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b5W6P-0002lU-TY for qemu-devel@nongnu.org; Wed, 25 May 2016 06:31:50 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 767FE80E42; Wed, 25 May 2016 10:31:49 +0000 (UTC) Received: from javelin.localdomain (vpn1-48-118.bne.redhat.com [10.64.48.118]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u4PAVX6N016306 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 25 May 2016 06:31:44 -0400 From: P J P To: Qemu Developers Date: Wed, 25 May 2016 16:01:29 +0530 Message-Id: <1464172291-2856-2-git-send-email-ppandit@redhat.com> In-Reply-To: <1464172291-2856-1-git-send-email-ppandit@redhat.com> References: <1464172291-2856-1-git-send-email-ppandit@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Wed, 25 May 2016 10:31:49 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 1/3] scsi: megasas: use appropriate property buffer size X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , Prasad J Pandit , Li Qiang , Hannes Reinecke , Alexander Graf Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Prasad J Pandit When setting MegaRAID SAS controller properties via MegaRAID Firmware Interface(MFI) commands, a user supplied size parameter is used to set property value. Use appropriate size value to avoid OOB access issues. Reported-by: Li Qiang Signed-off-by: Prasad J Pandit Reviewed-by: Alexander Graf --- hw/scsi/megasas.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c index a63a581..dcbd3e1 100644 --- a/hw/scsi/megasas.c +++ b/hw/scsi/megasas.c @@ -1446,7 +1446,7 @@ static int megasas_dcmd_set_properties(MegasasState *s, MegasasCmd *cmd) dcmd_size); return MFI_STAT_INVALID_PARAMETER; } - dma_buf_write((uint8_t *)&info, cmd->iov_size, &cmd->qsg); + dma_buf_write((uint8_t *)&info, dcmd_size, &cmd->qsg); trace_megasas_dcmd_unsupported(cmd->index, cmd->iov_size); return MFI_STAT_OK; }