NULL Pointer Dereference in Linux Kernel During Device Management Operations

CVE-2025-40134

What is CVE-2025-40134?

A race condition in the Linux kernel occurs between the device management suspension process and table loading, potentially leading to a NULL pointer dereference. This vulnerability arises when a suspension command is processed before the table loading is complete, resulting in an attempt to access an uninitialized pointer. The vulnerability can affect various distributions using the affected kernel version, posing a risk during device management operations. Proper handling of the table suspension conditions can mitigate the issue by skipping dependent operations when no valid table exists, ensuring system stability and preventing NULL pointer dereferences during critical operations.

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