Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6CBB7C433F5 for ; Mon, 10 Jan 2022 07:42:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241149AbiAJHm1 (ORCPT ); Mon, 10 Jan 2022 02:42:27 -0500 Received: from dfw.source.kernel.org ([139.178.84.217]:36500 "EHLO dfw.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240341AbiAJHac (ORCPT ); Mon, 10 Jan 2022 02:30:32 -0500 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 94639611EC; Mon, 10 Jan 2022 07:30:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 78928C36AFF; Mon, 10 Jan 2022 07:30:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1641799831; bh=3Ickka+6v+gJYj2pcGsavEYdwSot3ss+0+8d/9R7JoQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nFTfKCCSgg9k2MbP38pnfsdq047G6yLJe5enh3IGBOt9YA/ngVbv3q0YkvL3R1ms+ UHcPa8Io2LnaX1oMSTEgJK+T0v0vL6ek0piw/b/L+jI/ZDL7erlO5yHbMk/aDdGOH+ 0ah7L2n9b2DEhlfJTVsvjo1uHGEhSi8/gdLpKL6o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hangyu Hua , Jakub Kicinski , Aayush Agarwal Subject: [PATCH 5.10 30/43] phonet: refcount leak in pep_sock_accep Date: Mon, 10 Jan 2022 08:23:27 +0100 Message-Id: <20220110071818.355783033@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220110071817.337619922@linuxfoundation.org> References: <20220110071817.337619922@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hangyu Hua commit bcd0f93353326954817a4f9fa55ec57fb38acbb0 upstream. sock_hold(sk) is invoked in pep_sock_accept(), but __sock_put(sk) is not invoked in subsequent failure branches(pep_accept_conn() != 0). Signed-off-by: Hangyu Hua Link: https://lore.kernel.org/r/20211209082839.33985-1-hbh25y@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Aayush Agarwal Signed-off-by: Greg Kroah-Hartman --- net/phonet/pep.c | 1 + 1 file changed, 1 insertion(+) --- a/net/phonet/pep.c +++ b/net/phonet/pep.c @@ -868,6 +868,7 @@ static struct sock *pep_sock_accept(stru err = pep_accept_conn(newsk, skb); if (err) { + __sock_put(sk); sock_put(newsk); newsk = NULL; goto drop;