Commit bbf31bf1 authored Nov 29, 2009 by David Ford Committed by David S. Miller Nov 29, 2009

ipv4: additional update of dev_net(dev) to struct *net in ip_fragment.c, NULL ptr OOPS



ipv4 ip_frag_reasm(), fully replace 'dev_net(dev)' with 'net', defined
previously patched into 2.6.29.

Between 2.6.28.10 and 2.6.29, net/ipv4/ip_fragment.c was patched,
changing from dev_net(dev) to container_of(...).  Unfortunately the goto
section (out_fail) on oversized packets inside ip_frag_reasm() didn't
get touched up as well.  Oversized IP packets cause a NULL pointer
dereference and immediate hang.

I discovered this running openvasd and my previous email on this is
titled:  NULL pointer dereference at 2.6.32-rc8:net/ipv4/ip_fragment.c:566

Signed-off-by: David Ford <david@blue-labs.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 98468efd

net/ipv4/ip_fragment.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -563,7 +563,7 @@ static int ip_frag_reasm(struct ipq qp, struct sk_buff prev,
		printk(KERN_INFO "Oversized IP packet from %pI4.\n",
		&qp->saddr);
		out_fail:
		IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_REASMFAILS);
		IP_INC_STATS_BH(net, IPSTATS_MIB_REASMFAILS);
		return err;
		}