Linux Kernel Vulnerability in Ethernet MTK Driver

CVE-2026-80694

What is CVE-2026-80694?

A vulnerability in the Linux kernel's MTK Ethernet driver allows improper input handling during the IRQ process. The function mtk_poll_controller incorrectly passes a net_device structure instead of the required mtk_eth structure to mtk_handle_irq_rx. This mismanagement can lead to a system crash when CONFIG_NET_POLL_CONTROLLER is activated, affecting the stability of network operations.

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