From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3D4C7145A1F for ; Fri, 7 Aug 2026 07:07:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786086454; cv=none; b=QYPKRjce1a2WxF69JVILiHY6h39HURl1FZ8CsJFzA2kTeRkh3GOAAL7LNEtp+Tfw1GKTRHdKwNgOo4+V8eDt8rQ8eFbKx4GyxrHRpSJyTnNfPMf1E17lyxxEsfYi/xu/+YYHMsPcrQ9hBo1mdR3+AIp/v+TEmpmS8k6XgnFyG7Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786086454; c=relaxed/simple; bh=H51eEndb83vlMBdSKdQPCJs4a0NhTn4ra/iT1GUYwIc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=K0s3u0p6atkHs1fBiLQQvIUJe4RppCCBWThnTiDsAaa0Gk9SjLBPanrYWOKnaig/kUTN5u47hwu4V7drwkgZX/Wwl8X5YcHg3POws34fnnhrFjYhzagPg3YoG5M712OPS8xcRy0pWYLjeBA4BASDKpnN8zGCwNpPTXwQEcoEOmY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=TTMC30CR; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="TTMC30CR" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1786086452; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=UgOea8COfMWPGkNwdk17UcXroZGUrewDpcR0b9Y5VNk=; b=TTMC30CRfiDXkA5/KT6X+5LOJb4f1+snA4qlKw0gIm4s5WooHpuBsY+L539W78O86UwHfq l4J38PMGAssgF4sfjRpym6RdP3QMDJDrRY6BK9Vnt6el90ODfED8AZfztx+2rw6Lm/Oozh CggE3S447nhTW6Gn5ha9SJZUgimJ+kc= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-321-UEauz07_N9eY3qABqt7ZmQ-1; Fri, 07 Aug 2026 03:07:20 -0400 X-MC-Unique: UEauz07_N9eY3qABqt7ZmQ-1 X-Mimecast-MFC-AGG-ID: UEauz07_N9eY3qABqt7ZmQ_1786086439 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (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-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 995C51800646; Fri, 7 Aug 2026 07:07:19 +0000 (UTC) Received: from thuth-p1g4.redhat.corp (headnet03.pony-001.prod.iad2.dc.redhat.com [10.2.32.114]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 7D7ED1956094; Fri, 7 Aug 2026 07:07:17 +0000 (UTC) From: Thomas Huth To: Herbert Xu , "David S. Miller" Cc: linux-crypto@vger.kernel.org, Eric Biggers , linux-kernel@vger.kernel.org Subject: [PATCH v4 05/10] crypto: sa2ul - clear the crypto_aes_ctx when done Date: Fri, 7 Aug 2026 09:06:32 +0200 Message-ID: <20260807070651.228713-6-thuth@redhat.com> In-Reply-To: <20260807070651.228713-1-thuth@redhat.com> References: <20260807070651.228713-1-thuth@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 From: Thomas Huth Clear the crypto_aes_ctx structure via __cleanup(aes_zeroize_ctx) when we're done with it to avoid that key data could leak on the stack. Signed-off-by: Thomas Huth --- drivers/crypto/sa2ul.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/sa2ul.c b/drivers/crypto/sa2ul.c index d865fd4a098cb..f1a7c2cc7a1af 100644 --- a/drivers/crypto/sa2ul.c +++ b/drivers/crypto/sa2ul.c @@ -465,7 +465,7 @@ static void sa_prepare_iopads(struct algo_data *data, const u8 *key, /* Derive the inverse key used in AES-CBC decryption operation */ static inline int sa_aes_inv_key(u8 *inv_key, const u8 *key, u16 key_sz) { - struct crypto_aes_ctx ctx; + struct crypto_aes_ctx ctx __cleanup(aes_zeroize_ctx); int key_pos; if (aes_expandkey(&ctx, key, key_sz)) { -- 2.55.0