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CVE-2025-38464 is a use-after-free vulnerability in the Linux kernel Transparent Inter-Process Communication (TIPC) topology server, affecting tipc_conn_close() during network-namespace teardown. In tipc_topsrv_stop(), the connection IDR lock was released before tipc_conn_close() operated on the selected tipc_conn. Concurrent tipc_conn_recv_work() processing could close that same connection and drop its final kref, freeing the object before the teardown path accessed it. The resulting stale access was observed by KASAN as an invalid eight-byte read in tipc_conn_close(). The upstream fix acquires a reference to the connection while holding the IDR lock and releases that reference after tipc_conn_close() returns.
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A use-after-free vulnerability in the Linux kernel TIPC subsystem's tipc_conn_close() function.
A use-after-free vulnerability in the Linux kernel Transparent Inter-Process Communication (TIPC) subsystem's tipc_conn_close() function.
A Linux kernel TIPC use-after-free vulnerability in tipc_conn_close().
Linux kernel TIPC use-after-free vulnerability in tipc_conn_close().
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Cross-references every affected SKU, including bundled OEM variants.
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