From patchwork Fri Jul 5 07:57:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Smirnov X-Patchwork-Id: 810483 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 6EFEE1459F3 for ; Fri, 5 Jul 2024 07:58:41 +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=1720166323; cv=none; b=qM0Ur47zwk1IwE0+E9UgD54Sk3gsmkYtPunmyvsmeDNH5U4MU146CLgzWLemBK8F1FPMJNAkJaJC5ZsJPzgId/FIYpf0U16nfYbWrPE/aS8snZl+Dzb9+D9A8ReE6hWGQigpOcxCVd0J2GeQZwgwYB8NXrX6/r/5p3NtVD3MSQ8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720166323; c=relaxed/simple; bh=3hgKPuZroGIk/19JjsZQZp88S/OU/j51aTYzL9tF2RI=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lopw6FP8Olza9caKBNGI6GciGVyZnGda1tECM6wZknhWJoO5yETupdu98YAVHxmip4I7JH8jaUFpTrA0f21ifVJOXgppuc2PWiOqiei+PBPLjKJ/HDFb5fIq0kng9jX6JRwsbmgPiOh1vaIYWC+bTLmBtSOlFzEuoCeNRno0W8I= 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 (217.23.187.157) 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; Fri, 5 Jul 2024 10:58:07 +0300 From: Roman Smirnov To: CC: Roman Smirnov Subject: [PATCH BlueZ v2 5/5] settings: add NULL checks to gatt_db_load() Date: Fri, 5 Jul 2024 10:57:07 +0300 Message-ID: <20240705075709.26809-6-r.smirnov@omp.ru> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240705075709.26809-1-r.smirnov@omp.ru> References: <20240705075709.26809-1-r.smirnov@omp.ru> 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: 07/05/2024 07:27:52 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 0 X-KSE-AntiSpam-Info: Lua profiles 186342 [Jul 05 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: 217.23.187.157:7.1.2; d41d8cd98f00b204e9800998ecf8427e.com:7.1.1; omp.ru:7.1.1; 127.0.0.199:7.1.2 X-KSE-AntiSpam-Info: ApMailHostAddress: 217.23.187.157 X-KSE-AntiSpam-Info: Rate: 0 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: 07/05/2024 07:32:00 X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 7/5/2024 4:11:00 AM X-KSE-Attachment-Filter-Triggered-Rules: Clean X-KSE-Attachment-Filter-Triggered-Filters: Clean X-KSE-BulkMessagesFiltering-Scan-Result: InTheLimit It is necessary to prevent dereferencing of null pointers. Found with the SVACE static analysis tool. --- src/settings.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/settings.c b/src/settings.c index 996eaacd3..b61e694f1 100644 --- a/src/settings.c +++ b/src/settings.c @@ -232,7 +232,7 @@ static int gatt_db_load(struct gatt_db *db, GKeyFile *key_file, char **keys) value = g_key_file_get_string(key_file, "Attributes", *handle, NULL); - if (sscanf(value, "%[^:]:", type) != 1) { + if (!value || sscanf(value, "%[^:]:", type) != 1) { g_free(value); return -EIO; } @@ -255,7 +255,7 @@ static int gatt_db_load(struct gatt_db *db, GKeyFile *key_file, char **keys) value = g_key_file_get_string(key_file, "Attributes", *handle, NULL); - if (sscanf(value, "%[^:]:", type) != 1) { + if (!value || sscanf(value, "%[^:]:", type) != 1) { g_free(value); return -EIO; }