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CVE-2026-46135 is a race condition in the Linux kernel NVMe/TCP target implementation. The nvmet_tcp_handle_icreq() function updates the queue state after sending an Initialization Connection Response without synchronizing with target-side queue teardown. When a host sends an Initialization Connection Request and immediately closes the connection, teardown can mark the queue DISCONNECTING and release its reference before buffered request processing completes. Subsequent request processing can overwrite that state with LIVE, defeating the teardown guard and allowing another socket-state change to trigger a second kref_put() on an already released queue. The response send-failure path can similarly overwrite DISCONNECTING with FAILED. These races can cause kernel memory-safety failures and denial of service.
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A race condition in the Linux kernel NVMe/TCP target implementation allows connection-request handling to overwrite a queue's disconnecting state after teardown has begun. This can permit repeated teardown and a second reference-count release on an already released queue. The plugin assigns a critical CVSS v3 score of 9.8, while the vendor rates severity LOW. The fix serializes post-send state transitions with state_lock and stops processing when teardown has already started.
A vulnerability addressed by the Ubuntu USN-8667-1 kernel security update.
A Linux kernel nvmet-tcp vulnerability involving a race condition between ICReq handling and queue teardown.
A Linux kernel vulnerability in nvmet-tcp caused by a race condition between ICReq handling and queue teardown.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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