1 files changed, 11 insertions, 10 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 78c3f98fcdcf..aff8f46c2aa2 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -3129,17 +3129,19 @@ static int selinux_parse_skb(struct sk_buff *skb, struct avc_audit_data *ad,
 /**
  * selinux_skb_extlbl_sid - Determine the external label of a packet
  * @skb: the packet
- * @base_sid: the SELinux SID to use as a context for MLS only external labels
  * @sid: the packet's SID
  *
  * Description:
  * Check the various different forms of external packet labeling and determine
- * the external SID for the packet.
+ * the external SID for the packet.  If only one form of external labeling is
+ * present then it is used, if both labeled IPsec and NetLabel labels are
+ * present then the SELinux type information is taken from the labeled IPsec
+ * SA and the MLS sensitivity label information is taken from the NetLabel
+ * security attributes.  This bit of "magic" is done in the call to
+ * selinux_netlbl_skbuff_getsid().
  *
  */
-static void selinux_skb_extlbl_sid(struct sk_buff *skb,
-                                   u32 base_sid,
-                                   u32 *sid)
+static void selinux_skb_extlbl_sid(struct sk_buff *skb, u32 *sid)
 {
         u32 xfrm_sid;
         u32 nlbl_sid;
@@ -3147,10 +3149,9 @@ static void selinux_skb_extlbl_sid(struct sk_buff *skb,
         selinux_skb_xfrm_sid(skb, &xfrm_sid);
         if (selinux_netlbl_skbuff_getsid(skb,
                                          (xfrm_sid == SECSID_NULL ?
-                                          base_sid : xfrm_sid),
+                                          SECINITSID_NETMSG : xfrm_sid),
                                          &nlbl_sid) != 0)
                 nlbl_sid = SECSID_NULL;
-
         *sid = (nlbl_sid == SECSID_NULL ? xfrm_sid : nlbl_sid);
 }
 
@@ -3695,7 +3696,7 @@ static int selinux_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *
         if (sock && sock->sk->sk_family == PF_UNIX)
                 selinux_get_inode_sid(SOCK_INODE(sock), &peer_secid);
         else if (skb)
-                selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &peer_secid);
+                selinux_skb_extlbl_sid(skb, &peer_secid);
 
         if (peer_secid == SECSID_NULL)
                 err = -EINVAL;
@@ -3756,7 +3757,7 @@ static int selinux_inet_conn_request(struct sock *sk, struct sk_buff *skb,
         u32 newsid;
         u32 peersid;
 
-        selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &peersid);
+        selinux_skb_extlbl_sid(skb, &peersid);
         if (peersid == SECSID_NULL) {
                 req->secid = sksec->sid;
                 req->peer_secid = SECSID_NULL;
@@ -3794,7 +3795,7 @@ static void selinux_inet_conn_established(struct sock *sk,
 {
         struct sk_security_struct *sksec = sk->sk_security;
 
-        selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &sksec->peer_sid);
+        selinux_skb_extlbl_sid(skb, &sksec->peer_sid);
 }
 
 static void selinux_req_classify_flow(const struct request_sock *req,