Memory Leak Vulnerability in Linux Kernel Affecting Multiple lwtunnel Implementations

CVE-2025-21768

Summary

A vulnerability in the Linux kernel related to lwtunnel configurations can lead to memory leakage. Specifically, certain lwtunnels may improperly cache destination references, preventing the state from being freed. This issue occurs when the packet destination remains unchanged, allowing for potential memory management problems. Discovered through the ioam6.sh test, this vulnerability highlights the importance of vigilant network monitoring and integrity checks within kernel operations.

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