Smack: Check UDP-Lite and DCCP protocols during IPv6 handling

The smack_socket_sock_rcv_skb() function is checking smack labels
only for UDP and TCP frames carried in IPv6 packets. From now on,
it is able also to handle UDP-Lite and DCCP protocols.

Signed-off-by: Piotr Sawicki <p.sawicki2@partner.samsung.com>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index c4feb954d53f..aff8397e8c7e 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -3895,6 +3895,7 @@ static int smk_skb_to_addr_ipv6(struct sk_buff *skb, struct sockaddr_in6 *sip)
                         sip->sin6_port = th->source;
                 break;
         case IPPROTO_UDP:
+        case IPPROTO_UDPLITE:
                 uh = skb_header_pointer(skb, offset, sizeof(_udph), &_udph);
                 if (uh != NULL)
                         sip->sin6_port = uh->source;
@@ -3985,7 +3986,8 @@ access_check:
 #if IS_ENABLED(CONFIG_IPV6)
         case PF_INET6:
                 proto = smk_skb_to_addr_ipv6(skb, &sadd);
-                if (proto != IPPROTO_UDP && proto != IPPROTO_TCP)
+                if (proto != IPPROTO_UDP && proto != IPPROTO_UDPLITE &&
+                    proto != IPPROTO_TCP && proto != IPPROTO_DCCP)
                         break;
 #ifdef SMACK_IPV6_SECMARK_LABELING
                 if (skb && skb->secmark != 0)