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CVE-2026-45898 is a workqueue lifecycle vulnerability in the Linux kernel RDMA/iwcm subsystem. A change to cm_event_handler() introduced unconditional queue_work() calls under the assumption that already-pending work would not be queued again. However, the subsystem allocates distinct iwcm_work objects from a free list, each embedding a work_struct. A handler that drains the separate work_list can process and return an object to the free list while its corresponding workqueue entry remains queued. Reusing and reinitializing that object with INIT_WORK can corrupt internal workqueue lists. The failure was reproduced during ucmatose stress testing on an Intel E830 operating in iWARP mode, producing a kernel BUG/Oops.
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A Linux kernel RDMA/iwcm vulnerability involving workqueue list corruption caused by work_list handling.
A Linux kernel vulnerability in RDMA/iwcm involving workqueue list corruption.
A Linux kernel vulnerability in RDMA/iwcm where unconditional queue_work() usage with reused iwcm_work structures can cause workqueue list corruption, leading to kernel BUG/Oops conditions during processing.
A Linux kernel vulnerability in the RDMA/iwcm component caused workqueue list corruption due to incorrect work submission logic and reuse of embedded work_struct entries from a free list, potentially triggering kernel crashes and BUG/Oops conditions under stress.
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