1 files changed, 24 insertions, 18 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index ad8dd4e8657e..aff8f46c2aa2 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1592,9 +1592,10 @@ static int selinux_vm_enough_memory(long pages)
 	rc = secondary_ops->capable(current, CAP_SYS_ADMIN);
 	if (rc == 0)
 		rc = avc_has_perm_noaudit(tsec->sid, tsec->sid,
-					SECCLASS_CAPABILITY,
-					CAP_TO_MASK(CAP_SYS_ADMIN),
-					NULL);
+					  SECCLASS_CAPABILITY,
+					  CAP_TO_MASK(CAP_SYS_ADMIN),
+					  0,
+					  NULL);
 
 	if (rc == 0)
 		cap_sys_admin = 1;
@@ -2568,12 +2569,16 @@ static int file_map_prot_check(struct file *file, unsigned long prot, int shared
 }
 
 static int selinux_file_mmap(struct file *file, unsigned long reqprot,
-			     unsigned long prot, unsigned long flags)
+			     unsigned long prot, unsigned long flags,
+			     unsigned long addr, unsigned long addr_only)
 {
-	int rc;
+	int rc = 0;
+	u32 sid = ((struct task_security_struct*)(current->security))->sid;
 
-	rc = secondary_ops->file_mmap(file, reqprot, prot, flags);
-	if (rc)
+	if (addr < mmap_min_addr)
+		rc = avc_has_perm(sid, sid, SECCLASS_MEMPROTECT,
+				  MEMPROTECT__MMAP_ZERO, NULL);
+	if (rc || addr_only)
 		return rc;
 
 	if (selinux_checkreqprot)
@@ -3124,17 +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;
@@ -3142,10 +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);
 }
 
@@ -3690,7 +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;
@@ -3751,7 +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;
@@ -3789,7 +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,
@@ -4626,7 +4632,7 @@ static int selinux_setprocattr(struct task_struct *p,
 		if (p->ptrace & PT_PTRACED) {
 			error = avc_has_perm_noaudit(tsec->ptrace_sid, sid,
 						     SECCLASS_PROCESS,
-						     PROCESS__PTRACE, &avd);
+						     PROCESS__PTRACE, 0, &avd);
 			if (!error)
 				tsec->sid = sid;
 			task_unlock(p);