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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F093C433EF for ; Mon, 21 Feb 2022 03:59:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244329AbiBUD71 (ORCPT ); Sun, 20 Feb 2022 22:59:27 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:50938 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242228AbiBUD7Z (ORCPT ); Sun, 20 Feb 2022 22:59:25 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4271451E74 for ; Sun, 20 Feb 2022 19:59:03 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CE2B361182 for ; Mon, 21 Feb 2022 03:59:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E92DC340E9; Mon, 21 Feb 2022 03:59:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645415942; bh=aRT/691y4eTSJty4rbXCqFn+rNoVrr99ADul83Y+DFk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Y7Bk5uLcqlRzn5JkiU0UjHLifVjm5FMxJl6YGM9XXbw4nUmNtsNLeVZBpNccN2IJ0 zMpu9qks2IEJnk4AKtKTaffxBaNu9E556zMGPUkE+H6Nurp486sA7NcogeyboGxg3b Z1N9SGT5Y/OvKVoBJVwhEqvLgwJjhWGgLUEQU4qKIuTIE39iwEXgaTEvsZeJr6Bef/ 5cA4LDeOoRR0h52ApiFzFKMKOzsaB2vF9KM30m+t2d2p3I3QIqCVNu8C0wy6fw92oF WY+cLHOInRvPpKMk0+Uo+4Ks61nTeb3bLaNQIAYbL+d0cHIVIjLT03NJWxlYQtylrf 0Fm/QPoOiWBvg== Date: Sun, 20 Feb 2022 19:59:00 -0800 From: Eric Biggers To: "Jason A. Donenfeld" Cc: linux-kernel@vger.kernel.org, Dominik Brodowski , Jann Horn Subject: Re: [PATCH] random: zero buffer after reading secret entropy from userspace Message-ID: References: <20220209174456.644232-1-Jason@zx2c4.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220209174456.644232-1-Jason@zx2c4.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 09, 2022 at 06:44:56PM +0100, Jason A. Donenfeld wrote: > This buffer may contain entropic data that shouldn't stick around longer > than needed, zero it out our temporary buffer at the end of > write_pool(). > > Cc: Dominik Brodowski > Cc: Jann Horn > Signed-off-by: Jason A. Donenfeld > Reviewed-by: Dominik Brodowski > --- > drivers/char/random.c | 11 ++++++++--- > 1 file changed, 8 insertions(+), 3 deletions(-) > Reviewed-by: Eric Biggers - Eric