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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 A6D3DC2BA83 for ; Thu, 13 Feb 2020 16:10:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6CD0B20656 for ; Thu, 13 Feb 2020 16:10:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581610250; bh=AfbUs+nud2va6Aa5pGROgC4szYilv6TYCfS4lF1pL+A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=AylMn3PYBfecJBHzYiGPBTusXdNaS3L0+d9TOHtbBCx9S5RG6y/gMAG7iPkQtgM5X 1d4SJqWplHnEu/yxRh2keheWOfiH8hBoQVKnHlDHkij/e7Ku3+HHmA4odT00rS+UrT wPXIMaqGGlUUDD9uvCvrWWIJS0YUC2GhlUfwCkyo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728123AbgBMQKt (ORCPT ); Thu, 13 Feb 2020 11:10:49 -0500 Received: from mail.kernel.org ([198.145.29.99]:60090 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727970AbgBMPWd (ORCPT ); Thu, 13 Feb 2020 10:22:33 -0500 Received: from localhost (unknown [104.132.1.104]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id DDAD1246A3; Thu, 13 Feb 2020 15:22:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581607352; bh=AfbUs+nud2va6Aa5pGROgC4szYilv6TYCfS4lF1pL+A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jicbUgSIKv3hTcagI5sIfYJLEjo0YbVn7JQGf7RwANOi3CxO+LhpbYUiwxMxQq0ic 5PQq0kx/LqaVia4LLDRu/VpsFYg5RBCp4TtR8YCbT+GZqyIwESe6dH5gbRfR0sWtD6 RI+17OV9CPGT6P8Eh3ooey+6qcWJyPiMC1Oz/Mf8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, huangwen , Ganapathi Bhat , Brian Norris , Kalle Valo Subject: [PATCH 4.4 33/91] mwifiex: fix unbalanced locking in mwifiex_process_country_ie() Date: Thu, 13 Feb 2020 07:19:50 -0800 Message-Id: <20200213151834.516337372@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200213151821.384445454@linuxfoundation.org> References: <20200213151821.384445454@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Brian Norris commit 65b1aae0d9d5962faccc06bdb8e91a2a0b09451c upstream. We called rcu_read_lock(), so we need to call rcu_read_unlock() before we return. Fixes: 3d94a4a8373b ("mwifiex: fix possible heap overflow in mwifiex_process_country_ie()") Cc: stable@vger.kernel.org Cc: huangwen Cc: Ganapathi Bhat Signed-off-by: Brian Norris Acked-by: Ganapathi Bhat Signed-off-by: Kalle Valo Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/mwifiex/sta_ioctl.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/wireless/mwifiex/sta_ioctl.c +++ b/drivers/net/wireless/mwifiex/sta_ioctl.c @@ -232,6 +232,7 @@ static int mwifiex_process_country_ie(st if (country_ie_len > (IEEE80211_COUNTRY_STRING_LEN + MWIFIEX_MAX_TRIPLET_802_11D)) { + rcu_read_unlock(); mwifiex_dbg(priv->adapter, ERROR, "11D: country_ie_len overflow!, deauth AP\n"); return -EINVAL;