Patch "netfilter: nf_tables: fix potential NULL-ptr deref in nf_tables_dump_obj_done()" has been added to the 4.14-stable tree

This is a note to let you know that I've just added the patch titled

netfilter: nf_tables: fix potential NULL-ptr deref in nf_tables_dump_obj_done()

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
netfilter-nf_tables-fix-potential-null-ptr-deref-in-nf_tables_dump_obj_done.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Hangbin Liu <[email protected]>
Date: Mon, 25 Dec 2017 11:34:54 +0800
Subject: netfilter: nf_tables: fix potential NULL-ptr deref in nf_tables_dump_obj_done()

From: Hangbin Liu <[email protected]>

[ Upstream commit 8bea728dce8972e534e6b99fd550f7b5cc3864e8 ]

If there is no NFTA_OBJ_TABLE and NFTA_OBJ_TYPE, the c.data will be NULL in nf_tables_getobj(). So before free filter->table in nf_tables_dump_obj_done(), we need to check if filter is NULL first.

---
 net/netfilter/nf_tables_api.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

@@ -4596,8 +4596,10 @@ static int nf_tables_dump_obj_done(struc
 {
 	struct nft_obj_filter *filter = cb->data;
 
-	kfree(filter->table);
-	kfree(filter);
+	if (filter) {
+		kfree(filter->table);
+		kfree(filter);
+	}
 
 	return 0;
 }

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/netfilter-nf_tables-fix-potential-null-ptr-deref-in-nf_tables_dump_obj_done.patch