CVE-2025-21805

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> RDMA/rtrs: Add missing deinit() call<br /> <br /> A warning is triggered when repeatedly connecting and disconnecting the<br /> rnbd:<br /> list_add corruption. prev-&gt;next should be next (ffff88800b13e480), but was ffff88801ecd1338. (prev=ffff88801ecd1340).<br /> WARNING: CPU: 1 PID: 36562 at lib/list_debug.c:32 __list_add_valid_or_report+0x7f/0xa0<br /> Workqueue: ib_cm cm_work_handler [ib_cm]<br /> RIP: 0010:__list_add_valid_or_report+0x7f/0xa0<br /> ? __list_add_valid_or_report+0x7f/0xa0<br /> ib_register_event_handler+0x65/0x93 [ib_core]<br /> rtrs_srv_ib_dev_init+0x29/0x30 [rtrs_server]<br /> rtrs_ib_dev_find_or_add+0x124/0x1d0 [rtrs_core]<br /> __alloc_path+0x46c/0x680 [rtrs_server]<br /> ? rtrs_rdma_connect+0xa6/0x2d0 [rtrs_server]<br /> ? rcu_is_watching+0xd/0x40<br /> ? __mutex_lock+0x312/0xcf0<br /> ? get_or_create_srv+0xad/0x310 [rtrs_server]<br /> ? rtrs_rdma_connect+0xa6/0x2d0 [rtrs_server]<br /> rtrs_rdma_connect+0x23c/0x2d0 [rtrs_server]<br /> ? __lock_release+0x1b1/0x2d0<br /> cma_cm_event_handler+0x4a/0x1a0 [rdma_cm]<br /> cma_ib_req_handler+0x3a0/0x7e0 [rdma_cm]<br /> cm_process_work+0x28/0x1a0 [ib_cm]<br /> ? _raw_spin_unlock_irq+0x2f/0x50<br /> cm_req_handler+0x618/0xa60 [ib_cm]<br /> cm_work_handler+0x71/0x520 [ib_cm]<br /> <br /> Commit 667db86bcbe8 ("RDMA/rtrs: Register ib event handler") introduced a<br /> new element .deinit but never used it at all. Fix it by invoking the<br /> `deinit()` to appropriately unregister the IB event handler.