aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorEric Dumazet <eric.dumazet@gmail.com>2011-10-07 05:35:46 +0000
committerDavid S. Miller <davem@davemloft.net>2011-10-18 23:32:00 -0400
commit835acf5da239b91edb9f7ebe36516999e156e6ee (patch)
tree619c14b343ef06c4a9e243f030930983b15530ab
parent1ce5cce895309862d2c35d922816adebe094fe4a (diff)
downloadlinux-stericsson-835acf5da239b91edb9f7ebe36516999e156e6ee.tar.gz
l2tp: fix a potential skb leak in l2tp_xmit_skb()
l2tp_xmit_skb() can leak one skb if skb_cow_head() returns an error. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/l2tp/l2tp_core.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index ad4ac2601a56..34b2ddeacb67 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1045,8 +1045,10 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len
headroom = NET_SKB_PAD + sizeof(struct iphdr) +
uhlen + hdr_len;
old_headroom = skb_headroom(skb);
- if (skb_cow_head(skb, headroom))
+ if (skb_cow_head(skb, headroom)) {
+ dev_kfree_skb(skb);
goto abort;
+ }
new_headroom = skb_headroom(skb);
skb_orphan(skb);