From patchwork Thu Jun 27 12:39:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Smirnov X-Patchwork-Id: 13714319 Received: from mx01.omp.ru (mx01.omp.ru [90.154.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2B34515688D for ; Thu, 27 Jun 2024 12:40:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.154.21.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719492194; cv=none; b=q0POznqbgxkB5l4WfyjErmUQB6pmQ4j9vkmTCvsjC0pnpDctA3zy19rRPkkY9jGYB6ZaO8Ufl9I8bwiQEbYYHjrTgwppBpWSNZsVTb7aMBYIYFyscz960GTteYLLZxZbNJOSXC+vskIIAuo/z1lWk/d4e8qPA5VzSeYa+Y+Hu6k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719492194; c=relaxed/simple; bh=+nJk9AskrUM/xWoXuKPnNKth7awwK3+00TL/kDvs0wM=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=kNl5YnrFuB7BWe5mIRj68HAsImpbJmZL5NillcGyboJyYFv73bMYSJvJsIDiNU/dSsMd+C7THuVe2u2+k2ZEa4J6Be0MmR740QN4qM9hqyFtDmCOY1z7nFIBrQyI0JKaVY93QO3vrYtJmLz5rM6EPEZBbjmCQ6Jp3pGSCm1OCC4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=omp.ru; spf=pass smtp.mailfrom=omp.ru; arc=none smtp.client-ip=90.154.21.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=omp.ru Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=omp.ru Received: from localhost.localdomain (84.18.99.27) by msexch01.omp.ru (10.188.4.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.1258.12; Thu, 27 Jun 2024 15:39:49 +0300 From: Roman Smirnov To: CC: Roman Smirnov Subject: [PATCH BlueZ v2] plugins/sixaxis: add NULL check in setup_device() Date: Thu, 27 Jun 2024 15:39:02 +0300 Message-ID: <20240627123935.67784-1-r.smirnov@omp.ru> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: msexch01.omp.ru (10.188.4.12) To msexch01.omp.ru (10.188.4.12) X-KSE-ServerInfo: msexch01.omp.ru, 9 X-KSE-AntiSpam-Interceptor-Info: scan successful X-KSE-AntiSpam-Version: 6.1.0, Database issued on: 06/27/2024 12:17:40 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 19 X-KSE-AntiSpam-Info: Lua profiles 186185 [Jun 27 2024] X-KSE-AntiSpam-Info: Version: 6.1.0.4 X-KSE-AntiSpam-Info: Envelope from: r.smirnov@omp.ru X-KSE-AntiSpam-Info: LuaCore: 21 0.3.21 ebee5449fc125b2da45f1a6a6bc2c5c0c3ad0e05 X-KSE-AntiSpam-Info: {rep_avail} X-KSE-AntiSpam-Info: {Tracking_from_domain_doesnt_match_to} X-KSE-AntiSpam-Info: {SMTP from is not routable} X-KSE-AntiSpam-Info: {Found in DNSBL: 84.18.99.27 in (user) dbl.spamhaus.org} X-KSE-AntiSpam-Info: d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;127.0.0.199:7.1.2;omp.ru:7.1.1 X-KSE-AntiSpam-Info: ApMailHostAddress: 84.18.99.27 X-KSE-AntiSpam-Info: {DNS response errors} X-KSE-AntiSpam-Info: Rate: 19 X-KSE-AntiSpam-Info: Status: not_detected X-KSE-AntiSpam-Info: Method: none X-KSE-AntiSpam-Info: Auth:dmarc=temperror header.from=omp.ru;spf=temperror smtp.mailfrom=omp.ru;dkim=none X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Heuristic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 06/27/2024 12:21:00 X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 6/27/2024 11:06:00 AM X-KSE-Attachment-Filter-Triggered-Rules: Clean X-KSE-Attachment-Filter-Triggered-Filters: Clean X-KSE-BulkMessagesFiltering-Scan-Result: InTheLimit btd_adapter_get_device() may return NULL on the next call stack: btd_adapter_get_device() adapter_create_device() device_create() device_new() g_try_malloc0() It is necessary to prevent this to avoid dereferencing a null pointer further. --- plugins/sixaxis.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/plugins/sixaxis.c b/plugins/sixaxis.c index 544ab399a..3e69f1dd2 100644 --- a/plugins/sixaxis.c +++ b/plugins/sixaxis.c @@ -346,6 +346,11 @@ static bool setup_device(int fd, const char *sysfs_path, device = btd_adapter_get_device(adapter, &device_bdaddr, BDADDR_BREDR); + if (!device) { + error("sixaxis: unable to set up a new device"); + return false; + } + info("sixaxis: setting up new device"); btd_device_device_set_name(device, cp->name);