From patchwork Thu Sep 8 14:51:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 12970235 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 AB47BC38145 for ; Thu, 8 Sep 2022 14:52:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232754AbiIHOwE (ORCPT ); Thu, 8 Sep 2022 10:52:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32946 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231806AbiIHOvi (ORCPT ); Thu, 8 Sep 2022 10:51:38 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2EA6D4BFC for ; Thu, 8 Sep 2022 07:51:37 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7FCDC61D3F for ; Thu, 8 Sep 2022 14:51:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 893B0C433C1; Thu, 8 Sep 2022 14:51:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1662648696; bh=0/S//AJUuRbzRSsj+tbT3RKzOBNX9Rf0BhZwulh1t9s=; h=From:To:Cc:Subject:Date:From; b=VubCA7z6mf0AVn2ga47cdK3F8/XVY2fn7kQUtKUBplBT16m2Gx/zyXreLD2yr42gj 4Fd7bmivGLkEOWuBpyL9chvg3H6td6Uzd3Lz6hlzjkixXoX7iEFe3+lAoF66ZY7Wzk PtkXaNmEyG5Fw3+YBQxNkfpEdOGOeuYuKdDBsWqo= From: Greg Kroah-Hartman To: jejb@linux.ibm.com, martin.petersen@oracle.com Cc: linux-scsi@vger.kernel.org, Greg Kroah-Hartman , hdthky , stable , Dan Carpenter Subject: [PATCH] scsi: stex: properly zero out the passthrough command structure Date: Thu, 8 Sep 2022 16:51:54 +0200 Message-Id: <20220908145154.2284098-1-gregkh@linuxfoundation.org> X-Mailer: git-send-email 2.37.3 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=957; i=gregkh@linuxfoundation.org; h=from:subject; bh=0/S//AJUuRbzRSsj+tbT3RKzOBNX9Rf0BhZwulh1t9s=; b=owGbwMvMwCRo6H6F97bub03G02pJDMlSjO0be3eYtB9MdF33bHN9+7V3J76Kr8mbs/7Xp+MPNLIT NW9od8SyMAgyMciKKbJ82cZzdH/FIUUvQ9vTMHNYmUCGMHBxCsBEzsUzzA/z6Ez5lvg7dlGUn9+7E7 3Ldx8WeMuw4NyJP+zO99IP7c0+khL90j9Q7Z/jLwA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The passthrough structure is declared off of the stack, so it needs to be zeroed out before copied back to userspace to prevent any unintentional data leakage. Reported-by: hdthky Cc: stable Cc: "James E.J. Bottomley" Cc: "Martin K. Petersen" Reviewed-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/stex.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index e6420f2127ce..fc5880a35723 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -668,6 +668,7 @@ static int stex_queuecommand_lck(struct scsi_cmnd *cmd) struct st_drvver ver; size_t cp_len = sizeof(ver); + memset(&ver, 0x00, sizeof(ver)); ver.major = ST_VER_MAJOR; ver.minor = ST_VER_MINOR; ver.oem = ST_OEM;