Linux Kernel Route Vulnerability in Packet Transmission Affects Network Functionality

CVE-2025-68241

What is CVE-2025-68241?

A vulnerability in the Linux kernel's networking stack affects the transmission path for packet routing, specifically during the handling of routing table entries. This issue arises when the system attempts to remove stale entries within the IPv4 routing cache. Concurrency issues create a race condition, which can lead to a memory reference count leak as a routing entry is freed while still being bound to a network destination. This leak manifests as warnings in system logs and improper handling of network device cleanup, hindering overall network performance and stability.

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