Commit 37a6fed6 authored Apr 01, 2016 by Florian Westphal Committed by Sasha Levin Jul 12, 2016

netfilter: x_tables: assert minimum target size



[ Upstream commit a08e4e190b866579896c09af59b3bdca821da2cd ]

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: Sasha Levin <sasha.levin@oracle.com>

parent dda46754

net/netfilter/x_tables.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -570,6 +570,9 @@ int xt_check_entry_offsets(const void *base,
		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;