Received: by 2002:a05:6a10:2726:0:0:0:0 with SMTP id ib38csp2160392pxb; Fri, 25 Mar 2022 12:09:47 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxalxl7Ka66dCk2ruShdeNVSYJ9m8YuyH/F8Pp5HqQkPpe4uMLLS3Vt39JC5rfpVTaQ16Eu X-Received: by 2002:a63:fc12:0:b0:385:f767:34d8 with SMTP id j18-20020a63fc12000000b00385f76734d8mr838165pgi.172.1648235387674; Fri, 25 Mar 2022 12:09:47 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1648235387; cv=none; d=google.com; s=arc-20160816; b=xM0PDfmWV8KGZ4D7gwPEkBX6bsAysXqxQguL+iRauvBmlKZMBsuFE3C+yUDhMYKavK K8lf52Kmlpk5OaHquk8oV1ZFYBVpDZF/LjePwjWsR3HiHk4FBrPdNn2yUufYN+XEwBRe OH58HdbfEpGw3UqV3MXknJqxHrV8igurhpo8//gt5sK013pWrmwU7s+TAP06hBfqnW91 rj2Ld4sdHkzBMBVbI8ELD4Ls8G9pdrK4uXs8R9hHGlGnxw8iL8CYsix9ZYqF2H9B8HV/ 5UsJeghYDhUlG1X/mXfbfpwqjOrwBOXp+ioPPIDTqlMj65fNVWOLjieCwcq75IqQAj3o Bx5Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :user-agent:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=yYisZXQjBL9C116BBykqZyDzMwike6MMyTDM0g81rMg=; b=bM4PJPTA034mHO5FlFQBXGRYZXT5q9+36BWT8Av4nkC+VYWxSvCm5RJCMPHopOmLa6 QN3lnVx2/XbIJ6+ReR2TbxcMvjgcjoFULHicR2C0oXU7sy6evwVbc4qq8O+8S5TuU1V+ 3UA+C1JkCf4PdEfP8Arxp9fZnKU9JgxDvH3r3TObmZ/JHVpM3eL2rRkluGVZ33ufdwXl KzmGpYwqqBsO8B72OYhaE/3Qw1v39Oe9R0pruRh6jCBImxyiDcWwl/+ROLhGG8FLuPwk hZE/P/Kip95O8VXVZi+RC8ctBugqzZn35fKS58J6qWRvXiEHR3p4k07XX/g94O+rE8Ip FemQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=SDfoBqA2; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Return-Path: Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net. [2620:137:e000::1:18]) by mx.google.com with ESMTPS id n16-20020a170902e55000b00153b2d1651dsi3631982plf.293.2022.03.25.12.09.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Mar 2022 12:09:47 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=SDfoBqA2; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id F1056204AB8; Fri, 25 Mar 2022 11:15:52 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376300AbiCYPWV (ORCPT + 99 others); Fri, 25 Mar 2022 11:22:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376397AbiCYPTk (ORCPT ); Fri, 25 Mar 2022 11:19:40 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5D4E0E09B6; Fri, 25 Mar 2022 08:15:29 -0700 (PDT) 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 5CD9E60A1B; Fri, 25 Mar 2022 15:15:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 664E5C340EE; Fri, 25 Mar 2022 15:15:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1648221327; bh=YOKp3do8vELpQwkoJRceq2v3z9rJ/hm84CFhL8nDedI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SDfoBqA2NehN5YUtdTtyVAdJ3K1Kt/X84W4M37WWoRmQoWRSNNHm+cXgTa0dT2ccw 8j5LqBGam0YYfkAPvV3N6vukOBaw8WAQJhzu1qAAXnaGuy+9lMvEkgcdkpGf2PcyBF 9gAeVDSsKo/QRyXu1GddtFm7v+LApQ/cSS6pch3Y= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Pablo Neira Ayuso Subject: [PATCH 5.15 22/37] netfilter: nf_tables: initialize registers in nft_do_chain() Date: Fri, 25 Mar 2022 16:14:23 +0100 Message-Id: <20220325150420.567686053@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220325150419.931802116@linuxfoundation.org> References: <20220325150419.931802116@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-3.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Pablo Neira Ayuso commit 4c905f6740a365464e91467aa50916555b28213d upstream. Initialize registers to avoid stack leak into userspace. Fixes: 96518518cc41 ("netfilter: add nftables") Signed-off-by: Pablo Neira Ayuso Signed-off-by: Greg Kroah-Hartman --- net/netfilter/nf_tables_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/netfilter/nf_tables_core.c +++ b/net/netfilter/nf_tables_core.c @@ -162,7 +162,7 @@ nft_do_chain(struct nft_pktinfo *pkt, vo struct nft_rule *const *rules; const struct nft_rule *rule; const struct nft_expr *expr, *last; - struct nft_regs regs; + struct nft_regs regs = {}; unsigned int stackptr = 0; struct nft_jumpstack jumpstack[NFT_JUMP_STACK_SIZE]; bool genbit = READ_ONCE(net->nft.gencursor);