From patchwork Mon Dec 12 01:57:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shinichiro Kawasaki X-Patchwork-Id: 634785 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 75D9BC001B2 for ; Mon, 12 Dec 2022 01:57:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231147AbiLLB5N (ORCPT ); Sun, 11 Dec 2022 20:57:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230490AbiLLB5K (ORCPT ); Sun, 11 Dec 2022 20:57:10 -0500 Received: from esa6.hgst.iphmx.com (esa6.hgst.iphmx.com [216.71.154.45]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DB8D6DE99 for ; Sun, 11 Dec 2022 17:57:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1670810229; x=1702346229; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=c7DlJEoSy5dFeLuCVeM7Q58VrgwXGA454i+kY3FoAZo=; b=DwExcBOBlq9aoHPvdygkZijvfLGhR420K8EIJSPCyR4UQWbbB6RnMsSs n8PV1ltAD8C9BCkX6a9RyjaTgvucqcG2R5JEDdjkj9pqvt3dkhqheSalo Mpvvuxq8Fw0fUVJYd1ct0ISKKnKx84dc1llZ17HHSJRyhyZso5/KXLv9a QFfTq4ezA4xk17iUIm75KQ+j44FKiP3cjB94HFGhxia9Fwcxb0BqsRRk6 ng+SM+qidxYWVEo4vvWJJ02b9GS9VMXFdV1TlXcRVXw3VeB1Dqzys99U7 zMHUiMAqGnNsjY+0uqZ4wQx6CSAGw1DUALsA7PuLN6KeqS3Ash4EpiEHA Q==; X-IronPort-AV: E=Sophos;i="5.96,237,1665417600"; d="scan'208";a="218660140" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 12 Dec 2022 09:57:09 +0800 IronPort-SDR: oovD4HqZH5jJz/9LT5KMMNczXLiutD3F/2FoH446NlQ36iPj1NF8XuamhC/9SF+MkXUK3h0Clt VX00nabdckU5xwEF+eSKfYJs++Wb2Kwm93Wk5Ya0nd3aucEWJedQuSHd8JfBpyPWnRuoxvRo8Y w1rKFsimo/7pKmn0Xj3G+IDivPwSuF9WqCcS9Bk67tPC/BAgARWXjo8Zh7rdPZZwOB/ElXZOVp gzxxqGNVplsHhzSQkXhU4rqTLrX4LTuo2//M3/MwOiAX0TbIcfIMfKYSrxa6e9sIGBqlNwG1ex fKs= Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 11 Dec 2022 17:15:34 -0800 IronPort-SDR: FMxloDTFd2TgW4l6/ybeUh7LiWh3kqhijoAQWLU5W3XlC0Mrm8xu+yi4SpJz+Y92k95ewPPXWg QUNXN3feZbJTI3iLmbPEVWCe4U/9s/R3WREh5p8RNd4olpxGGGAFn0V4NTH8CnZEreFuZ15mly CXfgjDNfzsWHIgL32z0fragw4hHYUUCq6DwsKGp5BBjTsfL3El3sHouko8AHyyEkGTKVN2aCdM Vr7ryUCLkrzZiepsME1ZpUA2+HzvNmaYOInRvinikHMG0Q0omJx8XabZIL7USi2B3zKCl+g8zv MsY= WDCIronportException: Internal Received: from shindev.dhcp.fujisawa.hgst.com (HELO shindev.fujisawa.hgst.com) ([10.149.52.207]) by uls-op-cesaip02.wdc.com with ESMTP; 11 Dec 2022 17:57:08 -0800 From: Shin'ichiro Kawasaki To: linux-scsi@vger.kernel.org, mpi3mr-linuxdrv.pdl@broadcom.com Cc: Sathya Prakash Veerichetty , Kashyap Desai , Sumit Saxena , Sreekanth Reddy , "Martin K . Petersen" , Damien Le Moal Subject: [PATCH 1/3] scsi: mpi3mr: fix alltgt_info copy size in mpi3mr_get_all_tgt_info Date: Mon, 12 Dec 2022 10:57:04 +0900 Message-Id: <20221212015706.2609544-2-shinichiro.kawasaki@wdc.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20221212015706.2609544-1-shinichiro.kawasaki@wdc.com> References: <20221212015706.2609544-1-shinichiro.kawasaki@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The function mpi3mr_get_all_tgt_info calculates size of alltgt_info and allocate memory for it. After preparing valid data in alltgt_info, it calls sg_copy_from_buffer to copy alltgt_info to job->request_payload, specifying length of the payload as copy length. This length is larger than the calculated alltgt_info size. It causes memory access to invalid address and results in "BUG: KASAN: slab-out-of-bounds". The BUG was observed during boot using systems with eHBA-9600. By updating the HBA firmware to latest version 8.3.1.0 the BUG was not observed during boot, but still observed when command "storcli2 /c0 show" is executed. Fix the BUG by specifying the calculated alltgt_info size as copy length. Also check that the copy destination payload length is larger than the copy length. Fixes: f5e6d5a34376 ("scsi: mpi3mr: Add support for driver commands") Cc: stable@vger.kernel.org Signed-off-by: Shin'ichiro Kawasaki --- drivers/scsi/mpi3mr/mpi3mr_app.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c index 9baac224b213..f14556d50832 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_app.c +++ b/drivers/scsi/mpi3mr/mpi3mr_app.c @@ -322,6 +322,13 @@ static long mpi3mr_get_all_tgt_info(struct mpi3mr_ioc *mrioc, kern_entrylen = (num_devices - 1) * sizeof(*devmap_info); size = sizeof(*alltgt_info) + kern_entrylen; + + if (size > job->request_payload.payload_len) { + dprint_bsg_err(mrioc, "%s: too small payload length\n", + __func__); + return rval; + } + alltgt_info = kzalloc(size, GFP_KERNEL); if (!alltgt_info) return -ENOMEM; @@ -358,7 +365,7 @@ static long mpi3mr_get_all_tgt_info(struct mpi3mr_ioc *mrioc, sg_copy_from_buffer(job->request_payload.sg_list, job->request_payload.sg_cnt, - alltgt_info, job->request_payload.payload_len); + alltgt_info, size); rval = 0; out: kfree(alltgt_info);