KEYS: Fix a NULL pointer deref in the user-defined key type
[linux-3.10.git] / security / keys / user_defined.c
index 5b366d7..69ff52c 100644 (file)
@@ -102,7 +102,8 @@ int user_update(struct key *key, const void *data, size_t datalen)
                key->expiry = 0;
        }
 
-       kfree_rcu(zap, rcu);
+       if (zap)
+               kfree_rcu(zap, rcu);
 
 error:
        return ret;