| commit | 2a5b82751f73a0bf6f604ce56d34adba6da1b246 | [log] [tgz] |
|---|---|---|
| author | Denis V. Lunev <den@openvz.org> | Wed Oct 01 02:13:16 2008 -0700 |
| committer | David S. Miller <davem@davemloft.net> | Wed Oct 01 02:13:16 2008 -0700 |
| tree | 7ebfa7df43f81ee8aca50263e5bb7f1beed3112f | |
| parent | 4dd7972d1204c3851a4092cecd2207e05eb29b09 [diff] |
ipv6: NULL pointer dereferrence in tcp_v6_send_ack
The following actions are possible:
tcp_v6_rcv
skb->dev = NULL;
tcp_v6_do_rcv
tcp_v6_hnd_req
tcp_check_req
req->rsk_ops->send_ack == tcp_v6_send_ack
So, skb->dev can be NULL in tcp_v6_send_ack. We must obtain namespace
from dst entry.
Thanks to Vitaliy Gusev <vgusev@openvz.org> for initial problem finding
in IPv4 code.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>