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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 84B52C432C2 for ; Wed, 25 Sep 2019 16:14:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 583762146E for ; Wed, 25 Sep 2019 16:14:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="XRKs2NYw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388451AbfIYQOP (ORCPT ); Wed, 25 Sep 2019 12:14:15 -0400 Received: from mail-wr1-f65.google.com ([209.85.221.65]:44534 "EHLO mail-wr1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388175AbfIYQOO (ORCPT ); Wed, 25 Sep 2019 12:14:14 -0400 Received: by mail-wr1-f65.google.com with SMTP id i18so7615066wru.11 for ; Wed, 25 Sep 2019 09:14:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=0Jn67cgHpegjUHsejza3rXvNu+oyRcsIfVJ14lUdJdc=; b=XRKs2NYw1E8U9jJNC8URLm1v/D0E45ZGzjruLuYncb+se4PRgodkTOSbJKomErYA8A aBx3lV2el3sxyCNKIL4eXbNQPuR1xtPQ7AqCKcspizIUydpWF8XSp1d/12gAYylUfZkW Vq2CGQalEf6bYg4NWNLgpr4GZbbJ3I7nj8HX65C6pUaO256ht0C6HhxLS98Arc0Bdtbf t9NJmmRz17ZRwZ2KtyMCn2begsYmiEYQfixNVxYVzjqwsxv2xGCLr4vQAJz+w5NX5tiV 0aMtvtcgmSHOgQautTSanq/Mc/wFnViTtqZPwXuEVF+Ycc9wGZRGOk4F+AEA8/eJCIF0 qasQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=0Jn67cgHpegjUHsejza3rXvNu+oyRcsIfVJ14lUdJdc=; b=Tom/C8XZ9BClAXDA4/5iq/ZUjoBr6n9Pqws0R1cBMoe1wHduoyGLYkI8njL9MLrSfL Dj7/IC+u9yJEOFHyUgaBxWF5ky1al94kj2UT745bb90DuSu6cWKmBF53iX07QSEmR4PQ z6lsqENrrQ3e3qip6VK5+3zEd2wy239/lmSXe5CoyUWmwvFumQXsPz9mEWf5Up5KBB2c Kgn1LOV575JJDFeoAbyX6otUHsqIR5v/3QPtghC1KsGZb3/g0I0vLK/OC6fZ++kuOpHc urlyVJGFYks66W6vwB51tuOoDwcg/+sbG/H2k/RMWscKHlX1Ht4NvKXl5l0r/iyuEi96 2AVg== X-Gm-Message-State: APjAAAXH6a0jrNednA2pWB2THuluQnzUywIItqg3z8UjK1tsEUs93yr9 QrLbph76jHgAPBeRKKn8ta4mFnfaKhF1tJ04 X-Google-Smtp-Source: APXvYqxG3ZsPD1p2O9Mgdd9cJrxp7TwXatNXcNgf+8foDbIum7T7zIqBBIHsTAaJyjCie+BmcAs/Ug== X-Received: by 2002:adf:e908:: with SMTP id f8mr9903669wrm.210.1569428052551; Wed, 25 Sep 2019 09:14:12 -0700 (PDT) Received: from localhost.localdomain (laubervilliers-657-1-83-120.w92-154.abo.wanadoo.fr. [92.154.90.120]) by smtp.gmail.com with ESMTPSA id o70sm4991085wme.29.2019.09.25.09.14.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Sep 2019 09:14:11 -0700 (PDT) From: Ard Biesheuvel To: linux-crypto@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Ard Biesheuvel , Herbert Xu , David Miller , Greg KH , Linus Torvalds , "Jason A . Donenfeld" , Samuel Neves , Dan Carpenter , Arnd Bergmann , Eric Biggers , Andy Lutomirski , Will Deacon , Marc Zyngier , Catalin Marinas , Bruno Wolff III Subject: [RFC PATCH 16/18] netlink: use new strict length types in policy for 5.2 Date: Wed, 25 Sep 2019 18:12:53 +0200 Message-Id: <20190925161255.1871-17-ard.biesheuvel@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190925161255.1871-1-ard.biesheuvel@linaro.org> References: <20190925161255.1871-1-ard.biesheuvel@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Taken from https://git.zx2c4.com/WireGuard/commit/src?id=3120425f69003be287cb2d308f89c7a6a0335ff0 Reported-by: Bruno Wolff III --- drivers/net/wireguard/netlink.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/drivers/net/wireguard/netlink.c b/drivers/net/wireguard/netlink.c index 3763e8c14ea5..676d36725120 100644 --- a/drivers/net/wireguard/netlink.c +++ b/drivers/net/wireguard/netlink.c @@ -21,8 +21,8 @@ static struct genl_family genl_family; static const struct nla_policy device_policy[WGDEVICE_A_MAX + 1] = { [WGDEVICE_A_IFINDEX] = { .type = NLA_U32 }, [WGDEVICE_A_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 }, - [WGDEVICE_A_PRIVATE_KEY] = { .len = NOISE_PUBLIC_KEY_LEN }, - [WGDEVICE_A_PUBLIC_KEY] = { .len = NOISE_PUBLIC_KEY_LEN }, + [WGDEVICE_A_PRIVATE_KEY] = { .type = NLA_EXACT_LEN, .len = NOISE_PUBLIC_KEY_LEN }, + [WGDEVICE_A_PUBLIC_KEY] = { .type = NLA_EXACT_LEN, .len = NOISE_PUBLIC_KEY_LEN }, [WGDEVICE_A_FLAGS] = { .type = NLA_U32 }, [WGDEVICE_A_LISTEN_PORT] = { .type = NLA_U16 }, [WGDEVICE_A_FWMARK] = { .type = NLA_U32 }, @@ -30,12 +30,12 @@ static const struct nla_policy device_policy[WGDEVICE_A_MAX + 1] = { }; static const struct nla_policy peer_policy[WGPEER_A_MAX + 1] = { - [WGPEER_A_PUBLIC_KEY] = { .len = NOISE_PUBLIC_KEY_LEN }, - [WGPEER_A_PRESHARED_KEY] = { .len = NOISE_SYMMETRIC_KEY_LEN }, + [WGPEER_A_PUBLIC_KEY] = { .type = NLA_EXACT_LEN, .len = NOISE_PUBLIC_KEY_LEN }, + [WGPEER_A_PRESHARED_KEY] = { .type = NLA_EXACT_LEN, .len = NOISE_SYMMETRIC_KEY_LEN }, [WGPEER_A_FLAGS] = { .type = NLA_U32 }, - [WGPEER_A_ENDPOINT] = { .len = sizeof(struct sockaddr) }, + [WGPEER_A_ENDPOINT] = { .type = NLA_MIN_LEN, .len = sizeof(struct sockaddr) }, [WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL] = { .type = NLA_U16 }, - [WGPEER_A_LAST_HANDSHAKE_TIME] = { .len = sizeof(struct __kernel_timespec) }, + [WGPEER_A_LAST_HANDSHAKE_TIME] = { .type = NLA_EXACT_LEN, .len = sizeof(struct __kernel_timespec) }, [WGPEER_A_RX_BYTES] = { .type = NLA_U64 }, [WGPEER_A_TX_BYTES] = { .type = NLA_U64 }, [WGPEER_A_ALLOWEDIPS] = { .type = NLA_NESTED }, @@ -44,7 +44,7 @@ static const struct nla_policy peer_policy[WGPEER_A_MAX + 1] = { static const struct nla_policy allowedip_policy[WGALLOWEDIP_A_MAX + 1] = { [WGALLOWEDIP_A_FAMILY] = { .type = NLA_U16 }, - [WGALLOWEDIP_A_IPADDR] = { .len = sizeof(struct in_addr) }, + [WGALLOWEDIP_A_IPADDR] = { .type = NLA_MIN_LEN, .len = sizeof(struct in_addr) }, [WGALLOWEDIP_A_CIDR_MASK] = { .type = NLA_U8 } }; @@ -591,12 +591,10 @@ static const struct genl_ops genl_ops[] = { .start = wg_get_device_start, .dumpit = wg_get_device_dump, .done = wg_get_device_done, - .policy = device_policy, .flags = GENL_UNS_ADMIN_PERM }, { .cmd = WG_CMD_SET_DEVICE, .doit = wg_set_device, - .policy = device_policy, .flags = GENL_UNS_ADMIN_PERM } }; @@ -608,6 +606,7 @@ static struct genl_family genl_family __ro_after_init = { .version = WG_GENL_VERSION, .maxattr = WGDEVICE_A_MAX, .module = THIS_MODULE, + .policy = device_policy, .netnsok = true }; -- 2.20.1