rtlwifi: prevent format string usage from leaking

Use "%s" in the workqueue allocation to make sure the rtl_hal_cfg name
can never accidentally leak information via a format string.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/rtlwifi/base.c b/drivers/net/wireless/rtlwifi/base.c
index 58ba718..40b6d1d 100644 (file)
--- a/drivers/net/wireless/rtlwifi/base.c
+++ b/drivers/net/wireless/rtlwifi/base.c
@@ -467,7 +467,7 @@ static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
                    rtl_easy_concurrent_retrytimer_callback, (unsigned long)hw);
        /* <2> work queue */
        rtlpriv->works.hw = hw;
-       rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0);
+       rtlpriv->works.rtl_wq = alloc_workqueue("%s", 0, 0, rtlpriv->cfg->name);
        INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
                          (void *)rtl_watchdog_wq_callback);
        INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,