netdev - [patch net-next] tipc: uninitialized return code in tipc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20170124094935.GA19984@mwanda>
Date:   Tue, 24 Jan 2017 12:49:35 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Jon Maloy <jon.maloy@...csson.com>
Cc:     Ying Xue <ying.xue@...driver.com>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        tipc-discussion@...ts.sourceforge.net,
        kernel-janitors@...r.kernel.org
Subject: [patch net-next] tipc: uninitialized return code in tipc_setsockopt()

We shuffled some code around and added some new case statements here and
now "res" isn't initialized on all paths.

Fixes: 01fd12bb189a ("tipc: make replicast a user selectable option")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 5bec8aac5008..103d1fd058c0 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -2348,7 +2348,7 @@ static int tipc_setsockopt(struct socket *sock, int lvl, int opt,
 	struct sock *sk = sock->sk;
 	struct tipc_sock *tsk = tipc_sk(sk);
 	u32 value = 0;
-	int res;
+	int res = 0;
 
 	if ((lvl == IPPROTO_TCP) && (sock->type == SOCK_STREAM))
 		return 0;
@@ -2388,7 +2388,6 @@ static int tipc_setsockopt(struct socket *sock, int lvl, int opt,
 		break;
 	case TIPC_CONN_TIMEOUT:
 		tipc_sk(sk)->conn_timeout = value;
-		/* no need to set "res", since already 0 at this point */
 		break;
 	case TIPC_MCAST_BROADCAST:
 		tsk->mc_method.rcast = false;