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CVE-2026-43119: Linux

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: annotate data-races around hdev->req_status __hci_cmd_sync_sk() sets hdev->req_status under hdev->req_lock: hdev->req_status = HCI_REQ_PEND; However, several other functions read or write hdev->req_status without holding any lock: - hci_send_cmd_sync() reads req_status in hci_cmd_work (workqueue) - hci_cmd_sync_complete() reads/writes from HCI event completion - hci_cmd_sync_cancel() / hci_cmd_sync_cancel_sync() read/write - hci_abort_conn() reads in connection abort path Since __hci_cmd_sync_sk() runs on hdev->req_workqueue while hci_send_cmd_sync() runs on hdev->workqueue, these are different workqueues that can execute concurrently on different CPUs. The plain C accesses constitute a data race. Add READ_ONCE()/WRITE_ONCE() annotations on all concurrent accesses to hdev->req_status to prevent potential compiler optimizations that could affect correctness (e.g., load fusing in the wait_event condition or store reordering).

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    • Linux Linux: f80c5dad7b6467b884c445ffea45985793b4b2d0 преди ff5855e8891e1e2490741366d087fd2fbcaabc4a; f80c5dad7b6467b884c445ffea45985793b4b2d0 преди e51042ddc0b20d9bda5eb6dcf85a2668f9c5dae4; f80c5dad7b6467b884c445ffea45985793b4b2d0 преди 6e539907c0d11f514c5e0b049b27b04dff48a5b1; f80c5dad7b6467b884c445ffea45985793b4b2d0 преди a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27; f80c5dad7b6467b884c445ffea45985793b4b2d0 преди 40734ce8efc34c4a0d0222855798c0dc14b65f2e; f80c5dad7b6467b884c445ffea45985793b4b2d0 преди b6807cfc195ef99e1ac37b2e1e60df40295daa8c; 8603d49906b231bbcd9141db7d096fa1041bc379; 0e061885bfcd65ef5d09f154f3c3c3491cc7544a; a3d50fb7ce931f08a2c6194fdc4c9a56c9ed4153; 4.19.47 преди 4.20; 5.0.20 преди 5.1; 5.1.6 преди 5.2
    • Linux Linux: 5.2; преди 5.2; 6.1.191 до 6.1.*; 6.6.145 до 6.6.*; 6.12.83 до 6.12.*; 6.18.24 до 6.18.*; 6.19.14 до 6.19.*; от 7.0 нататък

    История

    • 6 май 2026 Публикувано

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    CVE-2026-43119: Linux | freedomonline.bg