RDMA/core: Wait for RCU callbacks before unloading ib_core

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In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Wait for RCU callbacks before unloading ib_core put_gid_ndev() is queued with call_rcu() and implemented in ib_core. Stopping the workqueues does not drain callbacks already queued, so RCU could invoke it after the module code has been unloaded. synchronize_rcu() does not wait for callbacks. Wait for them after all producers have stopped.

Source published

17 Sep 2026 16:11:19 UTC

Source modified

19 Oct 2026 09:05:43 UTC

Observed here

23 Oct 2026 15:48:27 UTC

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