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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 D0183C7618F for ; Mon, 15 Jul 2019 14:39:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A3D4F21850 for ; Mon, 15 Jul 2019 14:39:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563201561; bh=RohGiK8Y09Et6Cvd0nGclYoHPCkz1EwXR5xS6Zllcu4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=FHGLtA/W0cLVym57DUN7OYWyATUDZ+XOhFjSjpG+c/8Iu8YzfBXRXAK3rjK2YxBts vBckVFQg+ibt0BeJVjwu7vIq/IYd7Nz6oXOLzvMacVn3ebI2ekibe/hsnEk6oQI8qj QR5g+Ljhxj78PniwBBuHMHQWp6CkYH8PMvpHN6Q8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404235AbfGOOjT (ORCPT ); Mon, 15 Jul 2019 10:39:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:38024 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2403983AbfGOOjE (ORCPT ); Mon, 15 Jul 2019 10:39:04 -0400 Received: from sasha-vm.mshome.net (unknown [73.61.17.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C2E83205ED; Mon, 15 Jul 2019 14:39:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563201543; bh=RohGiK8Y09Et6Cvd0nGclYoHPCkz1EwXR5xS6Zllcu4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eCU8NwHaFf0NbgdH4DwQctjkUDpV2l3lhy5gpkJ9n3q8LWdrfR9+QZVjaXbo+xeFT NdM48WT662xLUa2U9y7PQ1UxpKCiNdUkNHmQS6IyEjbAu9OjwMlVNj28x2lvVozB/9 pU+B0ABE/9zZ4UJrRhkegJrrAHvjQHJzozhsIc9c= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Nicolas Dichtel , Anirudh Gupta , Herbert Xu , Steffen Klassert , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 39/73] xfrm: fix sa selector validation Date: Mon, 15 Jul 2019 10:35:55 -0400 Message-Id: <20190715143629.10893-39-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190715143629.10893-1-sashal@kernel.org> References: <20190715143629.10893-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Nicolas Dichtel [ Upstream commit b8d6d0079757cbd1b69724cfd1c08e2171c68cee ] After commit b38ff4075a80, the following command does not work anymore: $ ip xfrm state add src 10.125.0.2 dst 10.125.0.1 proto esp spi 34 reqid 1 \ mode tunnel enc 'cbc(aes)' 0xb0abdba8b782ad9d364ec81e3a7d82a1 auth-trunc \ 'hmac(sha1)' 0xe26609ebd00acb6a4d51fca13e49ea78a72c73e6 96 flag align4 In fact, the selector is not mandatory, allow the user to provide an empty selector. Fixes: b38ff4075a80 ("xfrm: Fix xfrm sel prefix length validation") CC: Anirudh Gupta Signed-off-by: Nicolas Dichtel Acked-by: Herbert Xu Signed-off-by: Steffen Klassert Signed-off-by: Sasha Levin --- net/xfrm/xfrm_user.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index df4b7fc721f6..f3e9d500fa5a 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -166,6 +166,9 @@ static int verify_newsa_info(struct xfrm_usersa_info *p, } switch (p->sel.family) { + case AF_UNSPEC: + break; + case AF_INET: if (p->sel.prefixlen_d > 32 || p->sel.prefixlen_s > 32) goto out; -- 2.20.1