NULL Pointer Dereference in Linux Kernel During Mode Change

CVE-2026-64190

What is CVE-2026-64190?

A vulnerability in the Linux kernel allows for a NULL pointer dereference in the team interface during a mode change. The issue arises when the team_xmit function attempts to access operation pointers that have been set to NULL by a concurrent mode change in another process. This can lead to kernel crashes, making it essential to address the race condition inherent in the mode change process. The fix involves updating handlers for transmit and receive operations more safely, ensuring stability and reliability in network management.

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