From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3EB2BC433FE for ; Fri, 11 Dec 2020 21:39:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ED60323372 for ; Fri, 11 Dec 2020 21:39:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404164AbgLKUpE (ORCPT ); Fri, 11 Dec 2020 15:45:04 -0500 Received: from mail.kernel.org ([198.145.29.99]:41274 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726648AbgLKUol (ORCPT ); Fri, 11 Dec 2020 15:44:41 -0500 Date: Fri, 11 Dec 2020 12:43:53 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1607719435; bh=XcX7+spUVzxQU2kUDRo52Z3TxHXsNz38Q4dbCvUXJLM=; h=From:To:Cc:Subject:References:In-Reply-To:From; b=leJmo82gpXgvmCGOYQOZxcw5lJONE+q+gzxcZb6Yvgt91/lSWgGAG7ZEqYztg4rDC DywMKnin/wrojGutM27uCxaSOnClCmhYmpfLwy2FU8yifm3V5NUCub3aYxzLnix27o npNpFEVOxbbLlI1JJHYM1KL7RuS9VdfEQp+t3FJVeNgc084/hx/fK+yDeJDeB7z56s 6yV05xjabm8hIIhNddTsq5BCqmt3NYUiTdFP7HEXfSjqBMmSohMerZ66wPOsfWClSO 6WMi0d9vPRCNmff9kVB8EiE4sA0jjlM76+NoBcy3TI9MR2Y1DTM3su4qYkLMG4XORY aGylM9LaYE+aw== From: Eric Biggers To: Jaegeuk Kim Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, kernel-team@android.com, cang@codeaurora.org, alim.akhtar@samsung.com, avri.altman@wdc.com, bvanassche@acm.org, martin.petersen@oracle.com, stanley.chu@mediatek.com, Jaegeuk Kim Subject: Re: [PATCH] scsi: ufs: fix memory boundary check for UFS 3.0 Message-ID: References: <20201211193814.1709484-1-jaegeuk@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201211193814.1709484-1-jaegeuk@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org On Fri, Dec 11, 2020 at 11:38:14AM -0800, Jaegeuk Kim wrote: > From: Jaegeuk Kim > > If param_offset is greater than what UFS supports, it'll give kernel panic. > > Signed-off-by: Jaegeuk Kim > Change-Id: I48ea6f3f3074bd42abf4ecf8be87806732f3e6a3 > --- > drivers/scsi/ufs/ufshcd.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c > index d6a3a0ba6960..04687661d0df 100644 > --- a/drivers/scsi/ufs/ufshcd.c > +++ b/drivers/scsi/ufs/ufshcd.c > @@ -3194,6 +3194,9 @@ int ufshcd_read_desc_param(struct ufs_hba *hba, > return -EINVAL; > } > > + if (param_offset > buff_len) > + return -EINVAL; > + > /* Check whether we need temp memory */ > if (param_offset != 0 || param_size < buff_len) { > desc_buf = kmalloc(buff_len, GFP_KERNEL); > -- Didn't this already get fixed by: commit 1699f980d87fb678a669490462cf0b9517c1fb47 Author: Can Guo Date: Wed Oct 21 22:59:00 2020 -0700 scsi: ufs: Fix unexpected values from ufshcd_read_desc_param()