Subject: Re: [PATCH net 1/2] ip_tunnel: Fix a memory corruption in ip_tunnel_xmit

From: Steffen Klassert <[email-masked]>
Date: Wed, 25 Sep 2013 14:13:37 +0200

On Wed, Sep 25, 2013 at 04:56:03AM -0700, Eric Dumazet wrote:
> On Wed, 2013-09-25 at 07:54 +0200, Steffen Klassert wrote:
> > 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.
> > 
> > Signed-off-by: Steffen Klassert <[email-masked]>
> > ---
> >  net/ipv4/ip_tunnel.c |   12 ++++++------
> >  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> Do you know or can we find when was the bug introduced ?

It was commit c544193214 (GRE: Refactor GRE tunneling code.)
when net/ipv4/ip_tunnel.c was created.

> 
> (commit id and title in your changelog would be really nice)
> 

I can send a v2 with these informations included if you want
that.