diff options
| author | Florian Westphal | 2016-04-01 14:17:25 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso | 2016-04-14 00:30:36 +0200 |
| commit | a08e4e190b866579896c09af59b3bdca821da2cd (patch) | |
| tree | 49a3ba3531cc49130ba5d5a9eb363c7bc8919310 /net | |
| parent | netfilter: x_tables: kill check_entry helper (diff) | |
| download | kernel-qcow2-linux-a08e4e190b866579896c09af59b3bdca821da2cd.tar.gz kernel-qcow2-linux-a08e4e190b866579896c09af59b3bdca821da2cd.tar.xz kernel-qcow2-linux-a08e4e190b866579896c09af59b3bdca821da2cd.zip | |
netfilter: x_tables: assert minimum target size
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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/x_tables.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index 1f44bfa8dd94..ec1b7183fff9 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -568,6 +568,9 @@ 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; |