From c283782fc5d60c4d8169137c6f955aa3553d3b3d Mon Sep 17 00:00:00 2001 From: Hui Wang Date: Fri, 27 Sep 2024 19:46:10 +0800 Subject: [PATCH] net: phy: realtek: Check the index value in led_hw_control_get Just like rtl8211f_led_hw_is_supported() and rtl8211f_led_hw_control_set(), the rtl8211f_led_hw_control_get() also needs to check the index value, otherwise the caller is likely to get an incorrect rules. Fixes: 17784801d888 ("net: phy: realtek: Add support for PHY LEDs on RTL8211F") Signed-off-by: Hui Wang Reviewed-by: Marek Vasut Link: https://patch.msgid.link/20240927114610.1278935-1-hui.wang@canonical.com Signed-off-by: Jakub Kicinski --- drivers/net/phy/realtek.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -527,6 +527,9 @@ static int rtl8211f_led_hw_control_get(s { int val; + if (index >= RTL8211F_LED_COUNT) + return -EINVAL; + val = phy_read_paged(phydev, 0xd04, RTL8211F_LEDCR); if (val < 0) return val;