drop queue-4.14/mips-make-sure-dt-memory-regions-are-valid.patch

[thirdparty/kernel/stable-queue.git] / releases / 4.4.14 / netfilter-x_tables-assert-minimum-target-size.patch

From a08e4e190b866579896c09af59b3bdca821da2cd Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Fri, 1 Apr 2016 14:17:25 +0200
Subject: netfilter: x_tables: assert minimum target size

From: Florian Westphal <fw@strlen.de>

commit a08e4e190b866579896c09af59b3bdca821da2cd upstream.

The target size includes the size of the xt_entry_target struct.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/netfilter/x_tables.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -567,6 +567,9 @@ int xt_check_entry_offsets(const void *b
 		return -EINVAL;
 
 	t = (void *)(e + target_offset);
+	if (t->u.target_size < sizeof(*t))
+		return -EINVAL;
+
 	if (target_offset + t->u.target_size > next_offset)
 		return -EINVAL;