CVE-2024-38553

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: fec: remove .ndo_poll_controller to avoid deadlocks<br /> <br /> There is a deadlock issue found in sungem driver, please refer to the<br /> commit ac0a230f719b ("eth: sungem: remove .ndo_poll_controller to avoid<br /> deadlocks"). The root cause of the issue is that netpoll is in atomic<br /> context and disable_irq() is called by .ndo_poll_controller interface<br /> of sungem driver, however, disable_irq() might sleep. After analyzing<br /> the implementation of fec_poll_controller(), the fec driver should have<br /> the same issue. Due to the fec driver uses NAPI for TX completions, the<br /> .ndo_poll_controller is unnecessary to be implemented in the fec driver,<br /> so fec_poll_controller() can be safely removed.