net: phy: phy_led_triggers: Fix a possible null-pointer dereference in...
net: phy: phy_led_triggers: Fix a possible null-pointer dereference in phy_led_trigger_change_speed() In phy_led_trigger_change_speed(), there is an if statement on line 48 to check whether phy->last_triggered is NULL: if (!phy->last_triggered) When phy->last_triggered is NULL, it is used on line 52: led_trigger_event(&phy->last_triggered->trigger, LED_OFF); Thus, a possible null-pointer dereference may occur. To fix this bug, led_trigger_event(&phy->last_triggered->trigger, LED_OFF) is called when phy->last_triggered is not NULL. This bug is found by a static analysis tool STCheck written by the OSLAB group in Tsinghua University. Signed-off-by:Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
e29903c4
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