diff options
| author | Cong Wang <xiyou.wangcong@gmail.com> | 2019-06-27 14:30:58 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-01 19:00:52 -0700 |
| commit | c8c8218ec5af5d2598381883acbefbf604e56b5e (patch) | |
| tree | 95b451690c50a0b20610a957cec9d64551a38c3a /net/netrom | |
| parent | 2e60546368165c2449564d71f6005dda9205b5fb (diff) | |
| download | lwn-c8c8218ec5af5d2598381883acbefbf604e56b5e.tar.gz lwn-c8c8218ec5af5d2598381883acbefbf604e56b5e.zip | |
netrom: fix a memory leak in nr_rx_frame()
When the skb is associated with a new sock, just assigning
it to skb->sk is not sufficient, we have to set its destructor
to free the sock properly too.
Reported-by: syzbot+d6636a36d3c34bd88938@syzkaller.appspotmail.com
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netrom')
| -rw-r--r-- | net/netrom/af_netrom.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c index 86b87925ef34..96740d389377 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -869,7 +869,7 @@ int nr_rx_frame(struct sk_buff *skb, struct net_device *dev) unsigned short frametype, flags, window, timeout; int ret; - skb->sk = NULL; /* Initially we don't know who it's for */ + skb_orphan(skb); /* * skb->data points to the netrom frame start @@ -968,6 +968,7 @@ int nr_rx_frame(struct sk_buff *skb, struct net_device *dev) window = skb->data[20]; skb->sk = make; + skb->destructor = sock_efree; make->sk_state = TCP_ESTABLISHED; /* Fill in his circuit details */ |