From patchwork Fri May 6 08:23:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Cabiddu, Giovanni" X-Patchwork-Id: 570954 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 B631EC43217 for ; Fri, 6 May 2022 08:24:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1389893AbiEFI1q (ORCPT ); Fri, 6 May 2022 04:27:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1390091AbiEFI1k (ORCPT ); Fri, 6 May 2022 04:27:40 -0400 Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4C96168F90; Fri, 6 May 2022 01:23:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1651825434; x=1683361434; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=HVc2NpXhSGE3nt5pbdjx0IGAR6BOSPzjSJYfwgr/9o8=; b=UQ4+s2H65ezWM+sxV9xu86lDRSSBixPXOVxppzS7dxIexZmc0U9agZkh K74cunonP5tOAWdfEwBr23dJCrLUJj4bTGZzyd2MVoQUQqatJumJIS63C a3lxDdwJ7MIGThROGztC8+AvAncQ4eYYDNKqgqxAIe8AVLZRRBkMA0Cbe aXXu1GmCENgNfu0Z7bftx1D9/oQuI3Cbe7RWp5c1eT4D13TepJbVKeKPa c7SUbDvJAF1j+UyvEWXIDJ5EZINfnItC01CcJigFYPzDFZL7HPXsQM5qN xFzGZEoDGYiGTNKw4r7b/NImrLZGZ9KcuSYO0NzUKmogrplOu/iVXUi5M A==; X-IronPort-AV: E=McAfee;i="6400,9594,10338"; a="328938505" X-IronPort-AV: E=Sophos;i="5.91,203,1647327600"; d="scan'208";a="328938505" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 May 2022 01:23:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,203,1647327600"; d="scan'208";a="563709033" Received: from silpixa00400314.ir.intel.com (HELO silpixa00400314.ger.corp.intel.com) ([10.237.222.76]) by orsmga007.jf.intel.com with ESMTP; 06 May 2022 01:23:51 -0700 From: Giovanni Cabiddu To: herbert@gondor.apana.org.au Cc: linux-crypto@vger.kernel.org, qat-linux@intel.com, vdronov@redhat.com, Giovanni Cabiddu , stable@vger.kernel.org, Adam Guerin , Wojciech Ziemba Subject: [PATCH 09/12] crypto: qat - add param check for DH Date: Fri, 6 May 2022 09:23:24 +0100 Message-Id: <20220506082327.21605-10-giovanni.cabiddu@intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220506082327.21605-1-giovanni.cabiddu@intel.com> References: <20220506082327.21605-1-giovanni.cabiddu@intel.com> MIME-Version: 1.0 Organization: Intel Research and Development Ireland Ltd - Co. Reg. #308263 - Collinstown Industrial Park, Leixlip, County Kildare - Ireland Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Reject requests with a source buffer that is bigger than the size of the key. This is to prevent a possible integer underflow that might happen when copying the source scatterlist into a linear buffer. Cc: stable@vger.kernel.org Signed-off-by: Giovanni Cabiddu Reviewed-by: Adam Guerin Reviewed-by: Wojciech Ziemba --- drivers/crypto/qat/qat_common/qat_asym_algs.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/crypto/qat/qat_common/qat_asym_algs.c b/drivers/crypto/qat/qat_common/qat_asym_algs.c index 2b2adeee5eee..b3badc5bd224 100644 --- a/drivers/crypto/qat/qat_common/qat_asym_algs.c +++ b/drivers/crypto/qat/qat_common/qat_asym_algs.c @@ -235,6 +235,10 @@ static int qat_dh_compute_value(struct kpp_request *req) req->dst_len = ctx->p_size; return -EOVERFLOW; } + + if (req->src_len > ctx->p_size) + return -EINVAL; + memset(msg, '\0', sizeof(*msg)); ICP_QAT_FW_PKE_HDR_VALID_FLAG_SET(msg->pke_hdr, ICP_QAT_FW_COMN_REQ_FLAG_SET);