rcu/nocb: Fix possible invalid rdp's->nocb_cb_kthread pointer access

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CVE-2025-38704 · Microsoft / collected KEV context

cve-program · CVE-2025-38704

• https://git.kernel.org/stable/c/b097ae798298885695c339d390b48b4e39619fa7
• https://git.kernel.org/stable/c/3da45ec1e485a1a5ad31fe9ddd467c7ee5ae4ef9
• https://git.kernel.org/stable/c/cce3d027227c69e85896af9fbc6fa9af5c68f067
• https://git.kernel.org/stable/c/1c951683a720b17c9ecaad1932bc95b29044611f
• https://git.kernel.org/stable/c/9b5ec8e6b31755288a07b3abeeab8cd38e9d3c9d
• https://git.kernel.org/stable/c/1bba3900ca18bdae28d1b9fa10f16a8f8cb2ada1

No related operational record is retained in the current change model.