Improper Device Cleanup in Linux Kernel Affects RDMA Functionality

CVE-2023-53504

What is CVE-2023-53504?

A vulnerability in the Linux kernel's RDMA subsystem relates to improper ordering during device deallocation. Specifically, the function ib_dealloc_device() is mismanaged, allowing potential use-after-free (UAF) conditions. To mitigate this issue, ib_dealloc_device() must only be invoked post device cleanup to ensure proper resource management and avoid unintended behavior. This vulnerability highlights the need for thorough review and implementation of device management sequences in kernel development.

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