From patchwork Fri May 6 08:23:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Giovanni Cabiddu X-Patchwork-Id: 570956 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 CAC67C4321E for ; Fri, 6 May 2022 08:24:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245621AbiEFI1l (ORCPT ); Fri, 6 May 2022 04:27:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44244 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1389909AbiEFI1k (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 DA47B68F8C; Fri, 6 May 2022 01:23:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1651825431; x=1683361431; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=svCxS1oaM995R68obNDMMWDpC/wGKa7ivFInunl1Tj4=; b=C07gFJ2mU0eQaJHBQ9QjbLThvVmBP0BOiqVvGYt4+s+ijgATYMqW2QlD r9lNlUI/qiDaQiI5H4R5D0YuyH/UXhLCCTZs7SuYuvJI2nBboGnrpw9w6 NefEDhkeRmv6yF9J2Lf1zep+CK25ZZ0wtWlyIEzUixIJ4pcuJ9oClVoMt Ue9K22uVPsxYrx1c8OUM4uCawsF2hGcw1aKSKqFaS//y3Dcfg2XILhUp6 ujYuBIAAHbpBkBKvOxbzIyQvDpa4nF81kmfE0EuX0KL0guJNJvwW5XY9V pBBkzOGv4BCsduKpfV4IsTSBZhiBzGWDgnSxZoBfpT4VOtnOvgIOVFuXg g==; X-IronPort-AV: E=McAfee;i="6400,9594,10338"; a="328938498" X-IronPort-AV: E=Sophos;i="5.91,203,1647327600"; d="scan'208";a="328938498" 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 01:23:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,203,1647327600"; d="scan'208";a="563709024" 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 01:23:49 -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 08/12] crypto: qat - add param check for RSA Date: Fri, 6 May 2022 09:23:23 +0100 Message-Id: <20220506082327.21605-9-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 | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/crypto/qat/qat_common/qat_asym_algs.c b/drivers/crypto/qat/qat_common/qat_asym_algs.c index 2fec89b8a188..2b2adeee5eee 100644 --- a/drivers/crypto/qat/qat_common/qat_asym_algs.c +++ b/drivers/crypto/qat/qat_common/qat_asym_algs.c @@ -656,6 +656,10 @@ static int qat_rsa_enc(struct akcipher_request *req) req->dst_len = ctx->key_sz; return -EOVERFLOW; } + + if (req->src_len > ctx->key_sz) + 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); @@ -785,6 +789,10 @@ static int qat_rsa_dec(struct akcipher_request *req) req->dst_len = ctx->key_sz; return -EOVERFLOW; } + + if (req->src_len > ctx->key_sz) + 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);