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From:   Ildar Kamaletdinov <i.kamaletdinov@omp.ru>
To:     <linux-bluetooth@vger.kernel.org>
CC:     Ildar Kamaletdinov <i.kamaletdinov@omp.ru>
Subject: [PATCH BlueZ 3/4] tools: Fix handle leak in rfcomm
Date:   Sat, 7 May 2022 20:07:02 +0300
Message-ID: <20220507170703.29902-4-i.kamaletdinov@omp.ru>
In-Reply-To: <20220507170703.29902-1-i.kamaletdinov@omp.ru>
References: <20220507170703.29902-1-i.kamaletdinov@omp.ru>
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Some branches of execution can make handle (socket) leakage.

Found by Linux Verification Center (linuxtesting.org) with the SVACE
static analysis tool.
---
 tools/rfcomm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/rfcomm.c b/tools/rfcomm.c
index cd520aa44..e013ff588 100644
--- a/tools/rfcomm.c
+++ b/tools/rfcomm.c
@@ -298,6 +298,7 @@ static void cmd_connect(int ctl, int dev, bdaddr_t *bdaddr, int argc, char **arg
 
 		if (setsockopt(sk, SOL_SOCKET, SO_LINGER, &l, sizeof(l)) < 0) {
 			perror("Can't set linger option");
+			close(sk);
 			return;
 		}
 	}
@@ -466,6 +467,7 @@ static void cmd_listen(int ctl, int dev, bdaddr_t *bdaddr, int argc, char **argv
 	if (getsockname(nsk, (struct sockaddr *)&laddr, &alen) < 0) {
 		perror("Can't get RFCOMM socket name");
 		close(nsk);
+		close(sk);
 		return;
 	}
 
@@ -475,6 +477,7 @@ static void cmd_listen(int ctl, int dev, bdaddr_t *bdaddr, int argc, char **argv
 		if (setsockopt(nsk, SOL_SOCKET, SO_LINGER, &l, sizeof(l)) < 0) {
 			perror("Can't set linger option");
 			close(nsk);
+			close(sk);
 			return;
 		}
 	}
@@ -490,6 +493,7 @@ static void cmd_listen(int ctl, int dev, bdaddr_t *bdaddr, int argc, char **argv
 	dev = ioctl(nsk, RFCOMMCREATEDEV, &req);
 	if (dev < 0) {
 		perror("Can't create RFCOMM TTY");
+		close(nsk);
 		close(sk);
 		return;
 	}
-- 
2.35.3