diff options
| author | Thomas Graf | 2014-12-16 21:05:21 +0100 |
|---|---|---|
| committer | David S. Miller | 2014-12-16 15:20:41 -0500 |
| commit | f1fb521f7d94c35e278d76a9198f078223f26799 (patch) | |
| tree | 8c2c239aa92c0a1cbe8256ec70635c265f3a3285 /net/ipv4 | |
| parent | bb1553c800227f33063fe96561af881619447b83 (diff) | |
ip_tunnel: Add missing validation of encap type to ip_tunnel_encap_setup()
The encap->type comes straight from Netlink. Validate it against
max supported encap types just like ip_encap_hlen() already does.
Fixes: a8c5f9 ("ip_tunnel: Ops registration for secondary encap (fou, gue)")
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/ip_tunnel.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index 2f498f87e3d8..d3e447936720 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -573,6 +573,9 @@ int ip_tunnel_encap(struct sk_buff *skb, struct ip_tunnel *t, if (t->encap.type == TUNNEL_ENCAP_NONE) return 0; + if (t->encap.type >= MAX_IPTUN_ENCAP_OPS) + return -EINVAL; + rcu_read_lock(); ops = rcu_dereference(iptun_encaps[t->encap.type]); if (likely(ops && ops->build_header)) |