diff --git a/drivers/gpu/drm/gud/gud_connector.c b/drivers/gpu/drm/gud/gud_connector.c
index ea0cca58b7c8..5c0065c876a7 100644
--- a/drivers/gpu/drm/gud/gud_connector.c
+++ b/drivers/gpu/drm/gud/gud_connector.c
@@ -396,8 +396,13 @@ static int gud_connector_add_tv_mode(struct gud_device *gdrm, struct drm_connect
 	}
 
 	num_modes = ret / GUD_CONNECTOR_TV_MODE_NAME_LEN;
-	for (i = 0; i < num_modes; i++)
-		modes[i] = &buf[i * GUD_CONNECTOR_TV_MODE_NAME_LEN];
+	for (i = 0; i < num_modes; i++) {
+		char *mode = &buf[i * GUD_CONNECTOR_TV_MODE_NAME_LEN];
+
+		/* The device is not trusted to NUL-terminate the name */
+		mode[GUD_CONNECTOR_TV_MODE_NAME_LEN - 1] = '\0';
+		modes[i] = mode;
+	}
 
 	ret = drm_mode_create_tv_properties_legacy(connector->dev, num_modes, modes);
 free: