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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E80D6C55174 for ; Wed, 5 Aug 2026 11:58:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:content-type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rFuj09l13bDJWP8ROOQNO6DWGBJe5ddETVvR3frCMgU=; b=ZPCaFeVvZ1Zutxp83oR/qiSZNd AVhWm+Q0QssRU7gh+2pRvZZqZ4NOZ933KhFMwtYGKt849lReU2DsUfuene6kRFh37uiuJQeQ98kK9 MT9oKamBSz57chLHK1Odi2U6hFPefoALURS+CpD+STQQ3AavduHg2Da5+t4kzGIOr1s/VXfj+O2+m jWHF9/BD6HeBaUDmwuTBbK682QNsBcTxeLvE088llo3A053yyFRR2bVtIG7N0gImPoK+5rpCEfJk3 FrokE9Pcv6Ea2d7AKFtm0tCvLPJjFnwOAKI/xnxiefthylzrtY6Qbqt6T2KvdBiH7VqwdNFYno9Uq t+3Bv5LQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wraGN-00000003qXQ-23LT; Wed, 05 Aug 2026 11:58:23 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wraGL-00000003qUH-16pr for linux-arm-kernel@lists.infradead.org; Wed, 05 Aug 2026 11:58:22 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1785931098; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rFuj09l13bDJWP8ROOQNO6DWGBJe5ddETVvR3frCMgU=; b=bDIF0TvDV7LWu8hraLNaZRRqG6OPVeZSngFXirqgo8lk6h+a3chhDf8Of34iMqj2g6myrJ YCrALYLBMAu9F+c3YkSloICD50sEI6gsGSgjhRGKMzVEa4WZqF9YPaFwz6RXmHU0YshwPX oe57vWj47CsaTI1nZkUYyDkXMaH0n+k= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-610-yPW5ZYxUMim58sgn2KjWOg-1; Wed, 05 Aug 2026 07:58:03 -0400 X-MC-Unique: yPW5ZYxUMim58sgn2KjWOg-1 X-Mimecast-MFC-AGG-ID: yPW5ZYxUMim58sgn2KjWOg_1785931081 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 826E4195608E; Wed, 5 Aug 2026 11:58:00 +0000 (UTC) Received: from thuth-p1g4.redhat.com (unknown [10.44.48.202]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 644DC30001A2; Wed, 5 Aug 2026 11:57:56 +0000 (UTC) From: Thomas Huth To: Herbert Xu , "David S. Miller" , linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, Neal Liu , Joel Stanley , Andrew Jeffery , linux-aspeed@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Cc: Eric Biggers Subject: [PATCH v3 02/10] crypto: aspeed - clear the crypto_aes_ctx when done Date: Wed, 5 Aug 2026 13:57:40 +0200 Message-ID: <20260805115749.392672-3-thuth@redhat.com> In-Reply-To: <20260805115749.392672-1-thuth@redhat.com> References: <20260805115749.392672-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 X-Mimecast-MFC-PROC-ID: laKUl2XYA1prn1oX4NgWjZhQKSRh2omUZICEJ9ZxUps_1785931081 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260805_045821_392679_18C68587 X-CRM114-Status: GOOD ( 12.37 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Thomas Huth Declare the gen_aes_key with __cleanup(aes_zeroize_ctx) to avoid that its contents could be leaking via the stack when the function returns. And since it is only required in one branch of the if-statement there, move it to that block, too. Signed-off-by: Thomas Huth --- drivers/crypto/aspeed/aspeed-hace-crypto.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/crypto/aspeed/aspeed-hace-crypto.c b/drivers/crypto/aspeed/aspeed-hace-crypto.c index fa201dae1f81b..e7d3f611df05c 100644 --- a/drivers/crypto/aspeed/aspeed-hace-crypto.c +++ b/drivers/crypto/aspeed/aspeed-hace-crypto.c @@ -576,7 +576,6 @@ static int aspeed_aes_setkey(struct crypto_skcipher *cipher, const u8 *key, { struct aspeed_cipher_ctx *ctx = crypto_skcipher_ctx(cipher); struct aspeed_hace_dev *hace_dev = ctx->hace_dev; - struct crypto_aes_ctx gen_aes_key; CIPHER_DBG(hace_dev, "keylen: %d bits\n", (keylen * 8)); @@ -585,9 +584,9 @@ static int aspeed_aes_setkey(struct crypto_skcipher *cipher, const u8 *key, return -EINVAL; if (ctx->hace_dev->version == AST2500_VERSION) { + struct crypto_aes_ctx gen_aes_key __cleanup(aes_zeroize_ctx); aes_expandkey(&gen_aes_key, key, keylen); memcpy(ctx->key, gen_aes_key.key_enc, AES_MAX_KEYLENGTH); - } else { memcpy(ctx->key, key, keylen); } -- 2.55.0