Linux Kernel Vulnerability in Netpoll Setup Affects Device Functionality

CVE-2025-68762

What is CVE-2025-68762?

A vulnerability exists in the Linux kernel related to the netpoll setup process, where an uninitialized work queue can lead to kernel warnings. This issue arises when a device with the IFF_DISABLE_NETPOLL flag is encountered. In this scenario, if netpoll setup fails, the system attempts to cancel a work queue that hasn't been initialized, resulting in a warning. By ensuring that the work queue is initialized at the start of the netpoll setup function, the cleanup process can be performed safely, preventing unnecessary warnings and enhancing system stability.

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