| commit | 3e08f4a72f689c6296d336c2aab4bddd60c93ae2 | [log] [tgz] |
|---|---|---|
| author | Steffen Klassert <steffen.klassert@secunet.com> | Tue Oct 01 11:33:59 2013 +0200 |
| committer | David S. Miller <davem@davemloft.net> | Tue Oct 01 12:42:16 2013 -0400 |
| tree | 726a51f17de026da0e7c0135f827d529a406fcfd | |
| parent | e024bdc051ab99eafb5dd9bad87e79afc27f8a44 [diff] |
ip_tunnel: Fix a memory corruption in ip_tunnel_xmit
We might extend the used aera of a skb beyond the total
headroom when we install the ipip header. Fix this by
calling skb_cow_head() unconditionally.
Bug was introduced with commit c544193214
("GRE: Refactor GRE tunneling code.")
Cc: Pravin Shelar <pshelar@nicira.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>