sd-rtnl: fix size check in sd_rtnl_message_append_string()

diff --git a/src/libsystemd/sd-rtnl/rtnl-message.c b/src/libsystemd/sd-rtnl/rtnl-message.c
index 5c627f96abfc706acd0bafe7ecdd14b711883570..165e84d7a0a1d2cdb11e31f305eed6ba86ab2c5f 100644 (file)
--- a/src/libsystemd/sd-rtnl/rtnl-message.c
+++ b/src/libsystemd/sd-rtnl/rtnl-message.c
@@ -700,8 +700,8 @@ int sd_rtnl_message_append_string(sd_rtnl_message *m, unsigned short type, const
                 size = (size_t)r;
 
         if (size) {
                 size = (size_t)r;
 
         if (size) {

-                length = strnlen(data, size);
-                if (length >= size)
+                length = strnlen(data, size+1);
+                if (length > size)

                         return -EINVAL;
         } else
                 length = strlen(data);
                         return -EINVAL;
         } else
                 length = strlen(data);