From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-eopbgr140057.outbound.protection.outlook.com ([40.107.14.57]:4231 "EHLO EUR01-VE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726996AbgHGQWf (ORCPT ); Fri, 7 Aug 2020 12:22:35 -0400 From: Andrei Botila Subject: [PATCH 22/22] crypto: vmx - add check for xts input length equal to zero Date: Fri, 7 Aug 2020 19:20:10 +0300 Message-Id: <20200807162010.18979-23-andrei.botila@oss.nxp.com> In-Reply-To: <20200807162010.18979-1-andrei.botila@oss.nxp.com> References: <20200807162010.18979-1-andrei.botila@oss.nxp.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit MIME-Version: 1.0 Sender: linux-s390-owner@vger.kernel.org List-ID: To: Herbert Xu , "David S. Miller" Cc: linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, x86@kernel.org, linux-arm-kernel@axis.com, Andrei Botila , =?UTF-8?q?Breno=20Leit=C3=A3o?= , Nayna Jain , Paulo Flabiano Smorigo , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman From: Andrei Botila Standardize the way input lengths equal to 0 are handled in all skcipher algorithms. All the algorithms return 0 for input lengths equal to zero. Cc: "Breno Leitão" Cc: Nayna Jain Cc: Paulo Flabiano Smorigo Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Signed-off-by: Andrei Botila --- drivers/crypto/vmx/aes_xts.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/crypto/vmx/aes_xts.c b/drivers/crypto/vmx/aes_xts.c index 9fee1b1532a4..33107c9e2656 100644 --- a/drivers/crypto/vmx/aes_xts.c +++ b/drivers/crypto/vmx/aes_xts.c @@ -84,6 +84,9 @@ static int p8_aes_xts_crypt(struct skcipher_request *req, int enc) u8 tweak[AES_BLOCK_SIZE]; int ret; + if (!req->cryptlen) + return 0; + if (req->cryptlen < AES_BLOCK_SIZE) return -EINVAL; -- 2.17.1