From patchwork Tue Jul 2 12:51:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Smirnov X-Patchwork-Id: 809181 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 F0DB715533B for ; Tue, 2 Jul 2024 12:52:18 +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=1719924746; cv=none; b=IwhiWRdCyoiAoI8tGYHI6ezoX/Z2zn/52GTGmzMChnpuR0HNRlq/Qm4T2ZCib+/JjsbyRxNrrIsyH4gMnJxATLZwliA6+3rZi/VtrvM+kyayZ8W7mBvDvD0+ckWW2wI6Ug09Vb4W7KbsF7xqMcP7ld96zGzJr3RhpjQNThpkHQA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719924746; c=relaxed/simple; bh=Jhx5fWFpqveJHTIACqPpFaywHxXI4yl3xco9skaErbA=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=egc2JJr6pYE/0kR/6yVVauKmsayoMMS+JDWX8Zees2fElTXslKR/fAgv2SLBaxC+oX0KVzwvkPtOZZ9A+ZfYS3O97ewjsPyIuBkVMeUJwGBUVhKyB2SMVTO19GjpWG2jw53gvIZbM8YieDYgIAmWLnQmW/SD0DdyC+g00bOmGjg= 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 inp1wst083.omp.ru (81.22.207.138) 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; Tue, 2 Jul 2024 15:52:11 +0300 From: Roman Smirnov To: CC: Roman Smirnov Subject: [PATCH BlueZ v1] core/gatt: add return value check of io_get_fd() to sock_read() Date: Tue, 2 Jul 2024 15:51:57 +0300 Message-ID: <20240702125157.87719-1-r.smirnov@omp.ru> X-Mailer: git-send-email 2.34.1 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: 07/02/2024 12:13:49 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 19 X-KSE-AntiSpam-Info: Lua profiles 186278 [Jul 02 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: 81.22.207.138 in (user) b.barracudacentral.org} X-KSE-AntiSpam-Info: {Found in DNSBL: 81.22.207.138 in (user) dbl.spamhaus.org} X-KSE-AntiSpam-Info: 81.22.207.138:7.1.2; omp.ru:7.1.1; d41d8cd98f00b204e9800998ecf8427e.com:7.1.1; inp1wst083.omp.ru:7.1.1; 127.0.0.199:7.1.2 X-KSE-AntiSpam-Info: ApMailHostAddress: 81.22.207.138 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: 07/02/2024 12:17:00 X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 7/2/2024 10:33:00 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 add a return value check. Found with the SVACE static analysis tool. --- src/gatt-client.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/gatt-client.c b/src/gatt-client.c index 60a21e3f6..8d83a9577 100644 --- a/src/gatt-client.c +++ b/src/gatt-client.c @@ -1127,6 +1127,11 @@ static bool sock_read(struct io *io, void *user_data) msg.msg_iov = &iov; msg.msg_iovlen = 1; + if (fd < 0) { + error("io_get_fd() returned %d\n", fd); + return false; + } + bytes_read = recvmsg(fd, &msg, MSG_DONTWAIT); if (bytes_read < 0) { error("recvmsg: %s", strerror(errno));