Fixed
Created: Jan 15, 2025
Updated: May 27, 2025
Resolved Date: May 21, 2025
Found In Version: 10.21.20.1
Fix Version: 10.21.20.25
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Kernel
In the Linux kernel, the following vulnerability has been resolved:RDMA/rtrs: Ensure 'ib_sge list' is accessibleMove the declaration of the 'ib_sge list' variable outside the'always_invalidate' block to ensure it remains accessible for usethroughout the function.Previously, 'ib_sge list' was declared within the 'always_invalidate'block, limiting its accessibility, then caused a'BUG: kernel NULL pointer dereference'1]. ? __die_body.cold+0x19/0x27 ? page_fault_oops+0x15a/0x2d0 ? search_module_extables+0x19/0x60 ? search_bpf_extables+0x5f/0x80 ? exc_page_fault+0x7e/0x180 ? asm_exc_page_fault+0x26/0x30 ? memcpy_orig+0xd5/0x140 rxe_mr_copy+0x1c3/0x200 [rdma_rxe] ? rxe_pool_get_index+0x4b/0x80 [rdma_rxe] copy_data+0xa5/0x230 [rdma_rxe] rxe_requester+0xd9b/0xf70 [rdma_rxe] ? finish_task_switch.isra.0+0x99/0x2e0 rxe_sender+0x13/0x40 [rdma_rxe] do_task+0x68/0x1e0 [rdma_rxe] process_one_work+0x177/0x330 worker_thread+0x252/0x390 ? __pfx_worker_thread+0x10/0x10This change ensures the variable is available for subsequent operationsthat require it.[1] https://lore.kernel.org/linux-rdma/6a1f3e8f-deb0-49f9-bc69-a9b03ecfcda7@fujitsu.com/
CREATE(Triage):(User=admin) [CVE-2024-36476 (https://nvd.nist.gov/vuln/detail/CVE-2024-36476)
