Kernel Panic Vulnerability in Linux Kernel Affecting Multiple Versions

CVE-2025-40178

What is CVE-2025-40178?

A vulnerability in the Linux kernel arises from a flaw in the function responsible for handling process IDs within namespace contexts. The improper handling of pointers can lead to a NULL pointer dereference when the active PID namespace returns null. This situation triggers a kernel panic, resulting in system instability and potential data loss. Specifically, when the system attempts to access a null pointer, it generates a fatal exception that halts the kernel, marking a critical point of failure that necessitates immediate corrective actions. System administrators are urged to apply patches and updates to safeguard their environments.

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