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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA102C4167D for ; Mon, 7 Mar 2022 09:41:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238386AbiCGJiX (ORCPT ); Mon, 7 Mar 2022 04:38:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34088 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237141AbiCGJaO (ORCPT ); Mon, 7 Mar 2022 04:30:14 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B1CA65DE4E; Mon, 7 Mar 2022 01:29:08 -0800 (PST) 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 ams.source.kernel.org (Postfix) with ESMTPS id 58E41B810B6; Mon, 7 Mar 2022 09:29:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A4CF2C340F5; Mon, 7 Mar 2022 09:29:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1646645346; bh=Sg/Ah47SA+zJdKoMGWdbk0fBXg3xkvIT4eCWhWp4Log=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BHFhbhuO+aLEmJlnhcHiXVxycyx7oMrQKAT6CKhoHKay4mO0CIE73R57lfovgMlBw KYPlwYmUUPkd47PhMYShSKjrwH5Ka0Hx1n4T1pazLNqE1VV4aaNgTUFVdlskj9PAme Nq4fqGhWJNL9XXXBT2ieGrQiraCYJEGUB6p60llQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jiasheng Jiang , Johannes Berg , Sasha Levin Subject: [PATCH 5.4 53/64] nl80211: Handle nla_memdup failures in handle_nan_filter Date: Mon, 7 Mar 2022 10:19:26 +0100 Message-Id: <20220307091640.656254748@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220307091639.136830784@linuxfoundation.org> References: <20220307091639.136830784@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: Jiasheng Jiang [ Upstream commit 6ad27f522cb3b210476daf63ce6ddb6568c0508b ] As there's potential for failure of the nla_memdup(), check the return value. Fixes: a442b761b24b ("cfg80211: add add_nan_func / del_nan_func") Signed-off-by: Jiasheng Jiang Link: https://lore.kernel.org/r/20220301100020.3801187-1-jiasheng@iscas.ac.cn Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/wireless/nl80211.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 7633d6a74bc2..f2bc465de284 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -12320,6 +12320,9 @@ static int handle_nan_filter(struct nlattr *attr_filter, i = 0; nla_for_each_nested(attr, attr_filter, rem) { filter[i].filter = nla_memdup(attr, GFP_KERNEL); + if (!filter[i].filter) + goto err; + filter[i].len = nla_len(attr); i++; } @@ -12332,6 +12335,15 @@ static int handle_nan_filter(struct nlattr *attr_filter, } return 0; + +err: + i = 0; + nla_for_each_nested(attr, attr_filter, rem) { + kfree(filter[i].filter); + i++; + } + kfree(filter); + return -ENOMEM; } static int nl80211_nan_add_func(struct sk_buff *skb, -- 2.34.1