4 files changed, 51 insertions, 4 deletions

diff --git a/security/dummy.c b/security/dummy.c
index 8ccccccc12ac..64f6da0f422e 100644
--- a/security/dummy.c
+++ b/security/dummy.c
@@ -810,6 +810,11 @@ static void dummy_xfrm_policy_free_security(struct xfrm_policy *xp)
 {
 }
 
+static int dummy_xfrm_policy_delete_security(struct xfrm_policy *xp)
+{
+        return 0;
+}
+
 static int dummy_xfrm_state_alloc_security(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
 {
         return 0;
@@ -819,6 +824,11 @@ static void dummy_xfrm_state_free_security(struct xfrm_state *x)
 {
 }
 
+static int dummy_xfrm_state_delete_security(struct xfrm_state *x)
+{
+        return 0;
+}
+
 static int dummy_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir)
 {
         return 0;
@@ -1024,8 +1034,10 @@ void security_fixup_ops (struct security_operations *ops)
         set_to_dummy_if_null(ops, xfrm_policy_alloc_security);
         set_to_dummy_if_null(ops, xfrm_policy_clone_security);
         set_to_dummy_if_null(ops, xfrm_policy_free_security);
+        set_to_dummy_if_null(ops, xfrm_policy_delete_security);
         set_to_dummy_if_null(ops, xfrm_state_alloc_security);
         set_to_dummy_if_null(ops, xfrm_state_free_security);
+        set_to_dummy_if_null(ops, xfrm_state_delete_security);
         set_to_dummy_if_null(ops, xfrm_policy_lookup);
 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
 #ifdef CONFIG_KEYS
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 90b4cdc0c948..cf7b62ca886a 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -4374,8 +4374,10 @@ static struct security_operations selinux_ops = {
         .xfrm_policy_alloc_security =   selinux_xfrm_policy_alloc,
         .xfrm_policy_clone_security =   selinux_xfrm_policy_clone,
         .xfrm_policy_free_security =    selinux_xfrm_policy_free,
+        .xfrm_policy_delete_security =  selinux_xfrm_policy_delete,
         .xfrm_state_alloc_security =    selinux_xfrm_state_alloc,
         .xfrm_state_free_security =     selinux_xfrm_state_free,
+        .xfrm_state_delete_security =   selinux_xfrm_state_delete,
         .xfrm_policy_lookup =           selinux_xfrm_policy_lookup,
 #endif
 };
diff --git a/security/selinux/include/xfrm.h b/security/selinux/include/xfrm.h
index c10f1fc41502..f0f4e480ff99 100644
--- a/security/selinux/include/xfrm.h
+++ b/security/selinux/include/xfrm.h
@@ -9,8 +9,10 @@
 int selinux_xfrm_policy_alloc(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx);
 int selinux_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new);
 void selinux_xfrm_policy_free(struct xfrm_policy *xp);
+int selinux_xfrm_policy_delete(struct xfrm_policy *xp);
 int selinux_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
 void selinux_xfrm_state_free(struct xfrm_state *x);
+int selinux_xfrm_state_delete(struct xfrm_state *x);
 int selinux_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir);
 
 /*
diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index abe99d881376..0e24df41099f 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