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| author | Florian Westphal <fw@strlen.de> | 2008-08-03 18:13:44 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-08-03 18:13:44 -0700 |
| commit | 1730554f253deb65fe5112c54b2f898d5318a328 (patch) | |
| tree | 7e729db3456bd61fa477fc94e38586c97a3beabb /net/ipv6/syncookies.c | |
| parent | adf044c8778de98dae29c5ce9973b7e43964674f (diff) | |
| download | linux-1730554f253deb65fe5112c54b2f898d5318a328.tar.gz linux-1730554f253deb65fe5112c54b2f898d5318a328.tar.bz2 linux-1730554f253deb65fe5112c54b2f898d5318a328.zip | |
ipv6: syncookies: free reqsk on xfrm_lookup error
cookie_v6_check() did not call reqsk_free() if xfrm_lookup() fails,
leaking the request sock.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/syncookies.c')
| -rw-r--r-- | net/ipv6/syncookies.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c index a46badd1082d..ec394cf5a19b 100644 --- a/net/ipv6/syncookies.c +++ b/net/ipv6/syncookies.c @@ -199,10 +199,8 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) ireq6 = inet6_rsk(req); treq = tcp_rsk(req); - if (security_inet_conn_request(sk, skb, req)) { - reqsk_free(req); - goto out; - } + if (security_inet_conn_request(sk, skb, req)) + goto out_free; req->mss = mss; ireq->rmt_port = th->source; @@ -255,14 +253,13 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) fl.fl_ip_dport = inet_rsk(req)->rmt_port; fl.fl_ip_sport = inet_sk(sk)->sport; security_req_classify_flow(req, &fl); - if (ip6_dst_lookup(sk, &dst, &fl)) { - reqsk_free(req); - goto out; - } + if (ip6_dst_lookup(sk, &dst, &fl)) + goto out_free; + if (final_p) ipv6_addr_copy(&fl.fl6_dst, final_p); if ((xfrm_lookup(&dst, &fl, sk, 0)) < 0) - goto out; + goto out_free; } req->window_clamp = tp->window_clamp ? :dst_metric(dst, RTAX_WINDOW); @@ -273,7 +270,10 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) ireq->rcv_wscale = rcv_wscale; ret = get_cookie_sock(sk, skb, req, dst); - -out: return ret; +out: + return ret; +out_free: + reqsk_free(req); + return NULL; } |