Linux Kernel Vulnerability in RDMA/rxe Resources Management

CVE-2025-39695

What is CVE-2025-39695?

A resource management issue in the Linux kernel, particularly in RDMA/rxe, allows for the delayed flushing of socket buffer (skb) packets when releasing RXE resources. As these skb packets depend on the rxe resources like queue pairs (QP) and socket connections (sk), improper release can lead to call trace errors. To mitigate this issue, a timestamp is attached to skb packets upon creation, enabling network devices to identify and free packets that hang for extended periods, thereby enhancing overall packet handling efficiency.

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