Patch "netfilter: nf_tables: fix oob access" has been added to the 4.4-stable tree

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

netfilter: nf_tables: fix oob access

to the 4.4-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-oob-access.patch
and it can be found in the queue-4.4 subdirectory.

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

From: Florian Westphal <[email protected]>
Date: Tue, 13 Dec 2016 13:59:33 +0100
Subject: netfilter: nf_tables: fix oob access

From: Florian Westphal <[email protected]>

[ Upstream commit 3e38df136e453aa69eb4472108ebce2fb00b1ba6 ]

BUG: KASAN: slab-out-of-bounds in nf_tables_rule_destroy+0xf1/0x130 at addr ffff88006a4c35c8
Read of size 8 by task nft/1607

When we've destroyed last valid expr, nft_expr_next() returns an invalid expr. We must not dereference it unless it passes != nft_expr_last() check.

---
 net/netfilter/nf_tables_api.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -1996,7 +1996,7 @@ static void nf_tables_rule_destroy(const
 	 * is called on error from nf_tables_newrule().
 	 */
 	expr = nft_expr_first(rule);
-	while (expr->ops && expr != nft_expr_last(rule)) {
+	while (expr != nft_expr_last(rule) && expr->ops) {
 		nf_tables_expr_destroy(ctx, expr);
 		expr = nft_expr_next(expr);
 	}

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

queue-4.4/netfilter-nf_tables-fix-oob-access.patch