1 files changed, 38 insertions, 13 deletions

diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index abe99d8..6633fb0 100644
--- a/security/selinux/xfrm.c
+++ b/security/selinux/xfrm.c
@@ -132,10 +132,7 @@ static int selinux_xfrm_sec_ctx_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_us
 		goto out;
 
 	/*
-	 * Does the subject have permission to set security or permission to
-	 * do the relabel?
-	 * Must be permitted to relabel from default socket type (process type)
-	 * to specified context
+	 * Does the subject have permission to set security context?
 	 */
 	rc = avc_has_perm(tsec->sid, ctx->ctx_sid,
 			  SECCLASS_ASSOCIATION,
@@ -201,6 +198,23 @@ void selinux_xfrm_policy_free(struct xfrm_policy *xp)
 }
 
 /*
+ * LSM hook implementation that authorizes deletion of labeled policies.
+ */
+int selinux_xfrm_policy_delete(struct xfrm_policy *xp)
+{
+	struct task_security_struct *tsec = current->security;
+	struct xfrm_sec_ctx *ctx = xp->security;
+	int rc = 0;
+
+	if (ctx)
+		rc = avc_has_perm(tsec->sid, ctx->ctx_sid,
+				  SECCLASS_ASSOCIATION,
+				  ASSOCIATION__SETCONTEXT, NULL);
+
+	return rc;
+}
+
+/*
  * LSM hook implementation that allocs and transfers sec_ctx spec to
  * xfrm_state.
  */
@@ -292,6 +306,23 @@ u32 selinux_socket_getpeer_dgram(struct sk_buff *skb)
 	return SECSID_NULL;
 }
 
+ /*
+  * LSM hook implementation that authorizes deletion of labeled SAs.
+  */
+int selinux_xfrm_state_delete(struct xfrm_state *x)
+{
+	struct task_security_struct *tsec = current->security;
+	struct xfrm_sec_ctx *ctx = x->security;
+	int rc = 0;
+
+	if (ctx)
+		rc = avc_has_perm(tsec->sid, ctx->ctx_sid,
+				  SECCLASS_ASSOCIATION,
+				  ASSOCIATION__SETCONTEXT, NULL);
+
+	return rc;
+}
+
 /*
  * LSM hook that controls access to unlabelled packets.  If
  * a xfrm_state is authorizable (defined by macro) then it was
@@ -356,18 +387,12 @@ int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb)
 			struct xfrm_state *x = dst_test->xfrm;
 
 			if (x && selinux_authorizable_xfrm(x))
-				goto accept;
+				goto out;
 		}
 	}
 
 	rc = avc_has_perm(isec_sid, SECINITSID_UNLABELED, SECCLASS_ASSOCIATION,
 			  ASSOCIATION__SENDTO, NULL);
-	if (rc)
-		goto drop;
-
-accept:
-	return NF_ACCEPT;
-
-drop:
-	return NF_DROP;
+out:
+	return rc;
 }