From patchwork Mon Feb 3 16:18:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 232095 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT 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 2CEDEC35247 for ; Mon, 3 Feb 2020 16:47:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 00DC120721 for ; Mon, 3 Feb 2020 16:47:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580748439; bh=gedCApNfPrc//LS/tGcmI9glIz8nDSTe2XPtHdRuYwo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Eo6vT4g5+f9rIPxOn8Va4YM00Hin9iCJ8QhjM5BdB7wmxBdz7YpyhGeEo67z0STpR UOiizcEh2IZmbSSYrrIaep85iVo8mQYYc9TgrVuyHEoC9N7eMFt9lgW5TAUAM/6Ueh RCUlT3bk8jv4pdcx3ntbh65xnQx8BGLV7jhVNckI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729478AbgBCQ1t (ORCPT ); Mon, 3 Feb 2020 11:27:49 -0500 Received: from mail.kernel.org ([198.145.29.99]:39194 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729477AbgBCQ1s (ORCPT ); Mon, 3 Feb 2020 11:27:48 -0500 Received: from localhost (unknown [104.132.45.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 601A02080C; Mon, 3 Feb 2020 16:27:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580747267; bh=gedCApNfPrc//LS/tGcmI9glIz8nDSTe2XPtHdRuYwo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Cl7CiGg5ttF1NhRRSCEuNbzjLRtBduIPJzJ1sSMOpUpgMR3ptop7KCOiHAscXrFZH QdpC/dyvwNWRRtJeHK0ukNOJ7JlFaY044z5uY3TK6k2dZQD8yC4ouzJqFz5E7X0F+T kpfagv3PlYqkW7epDebAz2YY+YiOh3soHvY7bgl4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Atul Gupta , Eric Biggers , Herbert Xu Subject: [PATCH 4.14 13/89] crypto: chelsio - fix writing tfm flags to wrong place Date: Mon, 3 Feb 2020 16:18:58 +0000 Message-Id: <20200203161918.621197108@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200203161916.847439465@linuxfoundation.org> References: <20200203161916.847439465@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Eric Biggers commit bd56cea012fc2d6381e8cd3209510ce09f9de8c9 upstream. The chelsio crypto driver is casting 'struct crypto_aead' directly to 'struct crypto_tfm', which is incorrect because the crypto_tfm isn't the first field of 'struct crypto_aead'. Consequently, the calls to crypto_tfm_set_flags() are modifying some other field in the struct. Also, the driver is setting CRYPTO_TFM_RES_BAD_KEY_LEN in ->setauthsize(), not just in ->setkey(). This is incorrect since this flag is for bad key lengths, not for bad authentication tag lengths. Fix these bugs by removing the broken crypto_tfm_set_flags() calls from ->setauthsize() and by fixing them in ->setkey(). Fixes: 324429d74127 ("chcr: Support for Chelsio's Crypto Hardware") Cc: # v4.9+ Cc: Atul Gupta Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- drivers/crypto/chelsio/chcr_algo.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) --- a/drivers/crypto/chelsio/chcr_algo.c +++ b/drivers/crypto/chelsio/chcr_algo.c @@ -2693,9 +2693,6 @@ static int chcr_gcm_setauthsize(struct c aeadctx->mayverify = VERIFY_SW; break; default: - - crypto_tfm_set_flags((struct crypto_tfm *) tfm, - CRYPTO_TFM_RES_BAD_KEY_LEN); return -EINVAL; } return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); @@ -2720,8 +2717,6 @@ static int chcr_4106_4309_setauthsize(st aeadctx->mayverify = VERIFY_HW; break; default: - crypto_tfm_set_flags((struct crypto_tfm *)tfm, - CRYPTO_TFM_RES_BAD_KEY_LEN); return -EINVAL; } return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); @@ -2762,8 +2757,6 @@ static int chcr_ccm_setauthsize(struct c aeadctx->mayverify = VERIFY_HW; break; default: - crypto_tfm_set_flags((struct crypto_tfm *)tfm, - CRYPTO_TFM_RES_BAD_KEY_LEN); return -EINVAL; } return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); @@ -2790,8 +2783,7 @@ static int chcr_ccm_common_setkey(struct ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256; } else { - crypto_tfm_set_flags((struct crypto_tfm *)aead, - CRYPTO_TFM_RES_BAD_KEY_LEN); + crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN); aeadctx->enckey_len = 0; return -EINVAL; } @@ -2831,8 +2823,7 @@ static int chcr_aead_rfc4309_setkey(stru int error; if (keylen < 3) { - crypto_tfm_set_flags((struct crypto_tfm *)aead, - CRYPTO_TFM_RES_BAD_KEY_LEN); + crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN); aeadctx->enckey_len = 0; return -EINVAL; } @@ -2883,8 +2874,7 @@ static int chcr_gcm_setkey(struct crypto } else if (keylen == AES_KEYSIZE_256) { ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; } else { - crypto_tfm_set_flags((struct crypto_tfm *)aead, - CRYPTO_TFM_RES_BAD_KEY_LEN); + crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN); pr_err("GCM: Invalid key length %d\n", keylen); ret = -EINVAL; goto out;