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 30169C7618F for ; Mon, 15 Jul 2019 15:14:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F1612205ED for ; Mon, 15 Jul 2019 15:14:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563203641; bh=ky5Arb6mRM6jsE1pVWlG83hj4T4rBiXsqCh53rxahyg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=XU4jM7PMFVCgK3+E54+r39gQP+Kyk0gajrT3lZyvj6M8+RgGQ3z+RrMsnbU9stIxT D0WlXHjmz7tFihbBdGJvfpYbX01NLjh3W3WZ6JsXKVLS4AsR6AMravkgMfP4nA/K08 m1TwtZhsfjOxvSu1O9spLkiXs3T73YrQOVl/pBRg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731653AbfGONtF (ORCPT ); Mon, 15 Jul 2019 09:49:05 -0400 Received: from mail.kernel.org ([198.145.29.99]:60318 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730790AbfGONtD (ORCPT ); Mon, 15 Jul 2019 09:49:03 -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 86EBF21537; Mon, 15 Jul 2019 13:49:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563198543; bh=ky5Arb6mRM6jsE1pVWlG83hj4T4rBiXsqCh53rxahyg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gbb1TqmkV3dpu6/yc+AtkcZ8/fSZ75F6wNtdI5AuJwPQoWW8WYCdK2+uXg1DZNNB5 BEOK3OXsI/tMktRLeP6eXOsgNAPhMA7jNgvjX5d5I6MaxQKv013Z73CgcFyWZ7ig3h R9JMkQpfDv/577UaTvu0hX4vKHKXfIfSgK0wXvvk= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jeremy Sowden , syzbot+4f0529365f7f2208d9f0@syzkaller.appspotmail.com, Steffen Klassert , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.2 040/249] af_key: fix leaks in key_pol_get_resp and dump_sp. Date: Mon, 15 Jul 2019 09:43:25 -0400 Message-Id: <20190715134655.4076-40-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190715134655.4076-1-sashal@kernel.org> References: <20190715134655.4076-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Jeremy Sowden [ Upstream commit 7c80eb1c7e2b8420477fbc998971d62a648035d9 ] In both functions, if pfkey_xfrm_policy2msg failed we leaked the newly allocated sk_buff. Free it on error. Fixes: 55569ce256ce ("Fix conversion between IPSEC_MODE_xxx and XFRM_MODE_xxx.") Reported-by: syzbot+4f0529365f7f2208d9f0@syzkaller.appspotmail.com Signed-off-by: Jeremy Sowden Signed-off-by: Steffen Klassert Signed-off-by: Sasha Levin --- net/key/af_key.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/net/key/af_key.c b/net/key/af_key.c index a50dd6f34b91..fe5fc4bab7ee 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -2438,8 +2438,10 @@ static int key_pol_get_resp(struct sock *sk, struct xfrm_policy *xp, const struc goto out; } err = pfkey_xfrm_policy2msg(out_skb, xp, dir); - if (err < 0) + if (err < 0) { + kfree_skb(out_skb); goto out; + } out_hdr = (struct sadb_msg *) out_skb->data; out_hdr->sadb_msg_version = hdr->sadb_msg_version; @@ -2690,8 +2692,10 @@ static int dump_sp(struct xfrm_policy *xp, int dir, int count, void *ptr) return PTR_ERR(out_skb); err = pfkey_xfrm_policy2msg(out_skb, xp, dir); - if (err < 0) + if (err < 0) { + kfree_skb(out_skb); return err; + } out_hdr = (struct sadb_msg *) out_skb->data; out_hdr->sadb_msg_version = pfk->dump.msg_version; -- 2.20.1