In the Linux kernel, the following vulnerability has been resolved: net: phy: phy_device: Prevent nullptr exceptions on ISR If phydev->irq is set unconditionally, check for valid interrupt handler or fall back to polling mode to prevent nullptr exceptions in interrupt service routine.
https://git.kernel.org/stable/c/7a71f61ebf95cedd3f245db6da397822971d8db5
https://git.kernel.org/stable/c/61c81872815f46006982bb80460c0c80a949b35b
https://git.kernel.org/stable/c/3419ee39e3d3162ab2ec9942bb537613ed5b6311