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Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf

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Pablo Neira Ayuso says:

====================
Netfilter fixes for net

1) Module autoload for masquerade and redirection does not work.

2) Leak in unqueued packets in nf_ct_frag6_queue(). Ignore duplicated
   fragments, pretend they are placed into the queue. Patches from
   Guillaume Nault.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2019-06-18 21:43:40 -04:00
commit d470e720ef
3 changed files with 14 additions and 14 deletions
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22
net/ipv6/netfilter/nf_conntrack_reasm.c
View File

@ -261,8 +261,14 @@ static int nf_ct_frag6_queue(struct frag_queue *fq, struct sk_buff *skb,
prev = fq->q.fragments_tail;
err = inet_frag_queue_insert(&fq->q, skb, offset, end);
if (err)
if (err) {
if (err == IPFRAG_DUP) {
/* No error for duplicates, pretend they got queued. */
kfree_skb(skb);
return -EINPROGRESS;
}
goto insert_error;
}
if (dev)
fq->iif = dev->ifindex;
@ -289,15 +295,17 @@ static int nf_ct_frag6_queue(struct frag_queue *fq, struct sk_buff *skb,
skb->_skb_refdst = 0UL;
err = nf_ct_frag6_reasm(fq, skb, prev, dev);
skb->_skb_refdst = orefdst;
return err;
/* After queue has assumed skb ownership, only 0 or
* -EINPROGRESS must be returned.
*/
return err ? -EINPROGRESS : 0;
}
skb_dst_drop(skb);
return -EINPROGRESS;
insert_error:
if (err == IPFRAG_DUP)
goto err;
inet_frag_kill(&fq->q);
err:
skb_dst_drop(skb);
@ -476,12 +484,6 @@ int nf_ct_frag6_gather(struct net *net, struct sk_buff *skb, u32 user)
ret = 0;
}
/* after queue has assumed skb ownership, only 0 or -EINPROGRESS
* must be returned.
*/
if (ret)
ret = -EINPROGRESS;
spin_unlock_bh(&fq->q.lock);
inet_frag_put(&fq->q);
return ret;

3
net/netfilter/nft_masq.c
View File

@ -307,5 +307,4 @@ module_exit(nft_masq_module_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Arturo Borrero Gonzalez <arturo@debian.org>");
MODULE_ALIAS_NFT_AF_EXPR(AF_INET6, "masq");
MODULE_ALIAS_NFT_AF_EXPR(AF_INET, "masq");
MODULE_ALIAS_NFT_EXPR("masq");

3
net/netfilter/nft_redir.c
View File

@ -294,5 +294,4 @@ module_exit(nft_redir_module_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Arturo Borrero Gonzalez <arturo@debian.org>");
MODULE_ALIAS_NFT_AF_EXPR(AF_INET, "redir");
MODULE_ALIAS_NFT_AF_EXPR(AF_INET6, "redir");
MODULE_ALIAS_NFT_EXPR("nat");