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CVE-2026-68214: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: media: rtl2832: fix use-after-free in rtl2832_remove() cancel_delayed_work_sync() is called before i2c_mux_del_adapters() in rtl2832_remove(). While the cancel waits for any running instance of i2c_gate_work to finish, it does not prevent the timer from being rescheduled by a concurrent thread. During probe, the r820t_attach() call attempts I2C transfers through the mux adapter. These transfers go through i2c_mux_master_xfer(), which calls rtl2832_deselect() after the transfer completes, rescheduling i2c_gate_work via schedule_delayed_work(). If this transfer is still in flight when rtl2832_remove() runs, rtl2832_deselect() can reschedule i2c_gate_work after it has been cancelled, causing a use-after-free when kfree(dev) is called. Fix this by calling i2c_mux_del_adapters() before cancel_delayed_work_sync(). Once the mux adapter is unregistered, no new I2C transfers can go through it, so rtl2832_deselect() can no longer reschedule i2c_gate_work. The subsequent cancel_delayed_work_sync() is then guaranteed to be final.

    Засегнати продукти

    • Linux Linux: cddcc40b1b1553010acb89add84c64b5d123ec94 преди 1e8a6bc19403661661fed5ae82f6eca6c9cdfad2; cddcc40b1b1553010acb89add84c64b5d123ec94 преди 68a9c0290897c1436ddceb8cea604c93377a0299; cddcc40b1b1553010acb89add84c64b5d123ec94 преди 13c06056699e66ff7109ba68658cc6ea4a23f516; cddcc40b1b1553010acb89add84c64b5d123ec94 преди 9acd5bbbe1df8e487e49488692c224496d4c9e16; cddcc40b1b1553010acb89add84c64b5d123ec94 преди 24bef237eef8dd1ebcffb129ba21891ddad0d309; cddcc40b1b1553010acb89add84c64b5d123ec94 преди 2c71bda6edc630a1f8c3c45d8df5fc22d234e042; cddcc40b1b1553010acb89add84c64b5d123ec94 преди 90d781711418881f8c836c2a859cc2886625d750; cddcc40b1b1553010acb89add84c64b5d123ec94 преди 680daf40a82d483949f87f0d8f98639dc47e610c
    • Linux Linux: 4.7; преди 4.7; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

    История

    • 10 август 2026 Публикувано

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    Първоизточници

    CVE-2026-68214: Linux | freedomonline.bg