From patchwork Wed May 20 09:37:46 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Berg X-Patchwork-Id: 6443411 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 150D5C0432 for ; Wed, 20 May 2015 09:37:54 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2216920373 for ; Wed, 20 May 2015 09:37:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E9047202C8 for ; Wed, 20 May 2015 09:37:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752633AbbETJhv (ORCPT ); Wed, 20 May 2015 05:37:51 -0400 Received: from s3.sipsolutions.net ([5.9.151.49]:35919 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751714AbbETJht (ORCPT ); Wed, 20 May 2015 05:37:49 -0400 Received: by sipsolutions.net with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_CBC_SHA256:128) (Exim 4.85) (envelope-from ) id 1Yv0Rf-0001nP-QX; Wed, 20 May 2015 11:37:47 +0200 From: Johannes Berg To: linux-wireless@vger.kernel.org Cc: Johannes Berg Subject: [PATCH] mac80211: fix memory leak Date: Wed, 20 May 2015 11:37:46 +0200 Message-Id: <1432114666-16034-1-git-send-email-johannes@sipsolutions.net> X-Mailer: git-send-email 2.1.4 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Johannes Berg My recent change here introduced a possible memory leak if the driver registers an invalid cipher schemes. This won't really happen in practice, but fix the leak nonetheless. Fixes: e3a55b5399d55 ("mac80211: validate cipher scheme PN length better") Signed-off-by: Johannes Berg --- net/mac80211/main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 3c956c5f99b2..99d27babd9f0 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -770,8 +770,10 @@ static int ieee80211_init_cipher_suites(struct ieee80211_local *local) for (r = 0; r < local->hw.n_cipher_schemes; r++) { suites[w++] = cs[r].cipher; - if (WARN_ON(cs[r].pn_len > IEEE80211_MAX_PN_LEN)) + if (WARN_ON(cs[r].pn_len > IEEE80211_MAX_PN_LEN)) { + kfree(suites); return -EINVAL; + } } }