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CVE-2026-64409: Linux

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtksdio: fix infinite loop in btmtksdio_txrx_work() Every once in a while we see a hung btmtksdio_flush() task: INFO: task kworker/u17:0:189 blocked for more than 122 seconds. __cancel_work_timer+0x3f4/0x460 cancel_work_sync+0x1c/0x2c btmtksdio_flush+0x2c/0x40 hci_dev_open_sync+0x10c4/0x2190 [..] It all boils down to incorrect time_is_before_jiffies() usage in btmtksdio_txrx_work(). The btmtksdio_txrx_work() loop is expected to be terminated if running for longer than 5*HZ. However the timeout check is twisted: time_is_before_jiffies(old_jiffies + 5*HZ) evaluates to true when old_jiffies + 5*HZ is in the past i.e. when a timeout has occurred. Using OR with time_is_before_jiffies(txrx_timeout) means that: - before the 5-second timeout: the condition is `int_status || false`, so it loops as long as there are pending interrupts. - after the 5-second timeout: the condition becomes `int_status || true`, which is always true. When the loop becomes infinite btmtksdio_txrx_work() loop never terminates and never releases the SDIO host. Fix loop termination condition to actually enforce a 5*HZ timeout.

    Засегнати продукти

    • Linux Linux: 26270bc189ea4b5a8356ec99561357fc87f00b32 преди f6682c23b6fac4780d297ae4662053d17e58fd52; 26270bc189ea4b5a8356ec99561357fc87f00b32 преди 466540e045d01fcacf383a5beb8a2dad2fc53a26; 26270bc189ea4b5a8356ec99561357fc87f00b32 преди 7b429d611060e87752e848851815537963726493; 26270bc189ea4b5a8356ec99561357fc87f00b32 преди 0039bdde36b23ccf1196635f1d52c5490481544d; 26270bc189ea4b5a8356ec99561357fc87f00b32 преди 0f0a83e26a9c7fd4b243c315ce07161d2496d83d; 26270bc189ea4b5a8356ec99561357fc87f00b32 преди a257407e2bbbb099ed427719a50563f67fa366d8
    • Linux Linux: 5.17; преди 5.17; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.96 до 6.12.*; 6.18.39 до 6.18.*; 7.1.4 до 7.1.*; от 7.2 нататък

    История

    • 25 юли 2026 Публикувано

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