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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 D493BC433FF for ; Fri, 2 Aug 2019 09:41:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AC966217D7 for ; Fri, 2 Aug 2019 09:41:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564738892; bh=QU/dUSVzQEWwEMHAx9CqbQrPAjeBGL0aT6VT5mf72hs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QxqLOKAu3OEzc9d1vbXNj81+oj8QWljkXxMkHghsbJEUWp5ys5WSdhdZXZo3nL7Mb C8eO7prFod7gwIYdYJJTCSrK7PnLpUipSSayM0cRXK9ihkUCl+1r+hMs3sOGM6yI2F T2LAqKxg12RxwjjjUPms4EO0HPCuP5Kzj53bDoUE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404599AbfHBJlb (ORCPT ); Fri, 2 Aug 2019 05:41:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:43106 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391825AbfHBJl2 (ORCPT ); Fri, 2 Aug 2019 05:41:28 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C1B20217D6; Fri, 2 Aug 2019 09:41:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564738887; bh=QU/dUSVzQEWwEMHAx9CqbQrPAjeBGL0aT6VT5mf72hs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B8OFWOfOj6DUrmUNUXyWmfVn1v2G/xdljhosuWqMmpunND04mpbNQ5Lrqhunl2cTb JJh1+WmW39j7XAbvmpPnrzlNU0gi/QqYf46/L319ovg79pkgP7D54nQcXzutVvx6Tx Ec9TJA9Dd/w02uJhOqlenZcTeltQ9i6RvEHlqYmI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Anirudh Gupta , Herbert Xu , Steffen Klassert , Sasha Levin Subject: [PATCH 4.9 019/223] xfrm: Fix xfrm sel prefix length validation Date: Fri, 2 Aug 2019 11:34:04 +0200 Message-Id: <20190802092240.312947118@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190802092238.692035242@linuxfoundation.org> References: <20190802092238.692035242@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [ Upstream commit b38ff4075a80b4da5cb2202d7965332ca0efb213 ] Family of src/dst can be different from family of selector src/dst. Use xfrm selector family to validate address prefix length, while verifying new sa from userspace. Validated patch with this command: ip xfrm state add src 1.1.6.1 dst 1.1.6.2 proto esp spi 4260196 \ reqid 20004 mode tunnel aead "rfc4106(gcm(aes))" \ 0x1111016400000000000000000000000044440001 128 \ sel src 1011:1:4::2/128 sel dst 1021:1:4::2/128 dev Port5 Fixes: 07bf7908950a ("xfrm: Validate address prefix lengths in the xfrm selector.") Signed-off-by: Anirudh Gupta Acked-by: Herbert Xu Signed-off-by: Steffen Klassert Signed-off-by: Sasha Levin --- net/xfrm/xfrm_user.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index ca5c79bfd9a5..df4b7fc721f6 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -150,6 +150,22 @@ static int verify_newsa_info(struct xfrm_usersa_info *p, err = -EINVAL; switch (p->family) { + case AF_INET: + break; + + case AF_INET6: +#if IS_ENABLED(CONFIG_IPV6) + break; +#else + err = -EAFNOSUPPORT; + goto out; +#endif + + default: + goto out; + } + + switch (p->sel.family) { case AF_INET: if (p->sel.prefixlen_d > 32 || p->sel.prefixlen_s > 32) goto out; -- 2.20.1