From d7226c7a4dd19929d6df4ae04698da2fcf6f875a Mon Sep 17 00:00:00 2001 From: David Ahern Date: Tue, 23 Aug 2016 21:05:27 -0700 Subject: net: diag: Fix refcnt leak in error path destroying socket inet_diag_find_one_icsk takes a reference to a socket that is not released if sock_diag_destroy returns an error. Fix by changing tcp_diag_destroy to manage the refcnt for all cases and remove the sock_put calls from tcp_abort. Fixes: c1e64e298b8ca ("net: diag: Support destroying TCP sockets") Reported-by: Lorenzo Colitti Signed-off-by: David Ahern Signed-off-by: David S. Miller --- net/ipv4/tcp_diag.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'net/ipv4/tcp_diag.c') diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c index 4d61093..a748c74 100644 --- a/net/ipv4/tcp_diag.c +++ b/net/ipv4/tcp_diag.c @@ -54,11 +54,16 @@ static int tcp_diag_destroy(struct sk_buff *in_skb, { struct net *net = sock_net(in_skb->sk); struct sock *sk = inet_diag_find_one_icsk(net, &tcp_hashinfo, req); + int err; if (IS_ERR(sk)) return PTR_ERR(sk); - return sock_diag_destroy(sk, ECONNABORTED); + err = sock_diag_destroy(sk, ECONNABORTED); + + sock_gen_put(sk); + + return err; } #endif -- cgit v1.1