Vulnerability in Linux Kernel Affecting VXLAN Functionality

CVE-2025-21790

What is CVE-2025-21790?

A vulnerability has been identified within the Linux Kernel’s VXLAN functionality, where the initialization process fails to properly validate return values from the 'vxlan_vnigroup_init()' function. This oversight can lead to a system crash, primarily due to null pointer dereferences and general protection faults. It is critical to ensure that the success of this initialization is explicitly verified to prevent potential disruptions in network stability. Users are advised to apply the latest kernel updates to mitigate this risk.

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