Memory Management Flaw in Linux Kernel Affects Mediatek Devices

CVE-2026-80750

What is CVE-2026-80750?

A vulnerability exists in the Linux kernel that may lead to memory management issues related to device nodes within Mediatek systems. In the affected code, certain error handling paths fail to appropriately manage device node references, which can lead to dereferencing a freed device node when an error occurs during the lookup of legacy bus protection regmaps. This flaw occurs because the device node reference is dropped before emitting an error message, potentially exposing the system to further issues when operating with device trees. Proper handling of node references is crucial to prevent unauthorized memory access or crashes within Mediatek's hardware ecosystem.

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