CVE-2026-80694
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
In the Linux kernel, the mtk_eth_soc network driver had a bug where the wrong pointer (net_device instead of mtk_eth) was passed to mtk_handle_irq_rx in mtk_poll_controller. This could cause a system crash when using CONFIG_NET_POLL_CONTROLLER.
Risk Assessment
Using ndo_poll_controller with CONFIG_NET_POLL_CONTROLLER enabled could cause a system crash, leading to denial of service.
Recommendation
Install a Linux kernel patch that passes the correct mtk_eth pointer to mtk_handle_irq_rx in mtk_poll_controller.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller mtk_handle_irq_rx expects a struct mtk_eth * (matching the request_irq cookie), but mtk_poll_controller incorrectly passed the net_device *. Calling ndo_poll_controller with CONFIG_NET_POLL_CONTROLLER enabled would then crash.