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CVE-2026-98749: Linux

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CVSS

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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: tty: serial: max3100: shut down timer before freeing port max3100_shutdown() stops the polling timer but returns early during system suspend. If the SPI device is unbound before resume, the serial core does not call max3100_shutdown() again, so max3100_remove() frees the port while the timer remains armed. max3100_timeout() may then access the freed port and re-arm the timer. Add final timer teardown to max3100_remove() and use timer_shutdown_sync() to prevent a racing callback from re-arming it. Also free the IRQ and destroy the workqueue there before freeing the port. Keep timer_delete_sync() in max3100_shutdown() so that a subsequent open() can re-arm the timer. The workqueue is created before request_irq() and destroyed on both request_irq() failure and normal shutdown. Its presence at remove thus identifies the IRQ left registered when suspend bypasses shutdown. Free the IRQ before destroying the workqueue, in both max3100_shutdown() and max3100_remove(), and cancel the pending work in between. free_irq() waits for a running interrupt handler to finish and no new handler can start afterwards, so a racing handler cannot queue work on a workqueue that is being destroyed; the force_end_work check in max3100_dowork() only narrows that window, as a handler delayed between the check and queue_work() could still run after the teardown has cleared the workqueue pointer. Cancelling the work also keeps destroy_workqueue() from waiting on a queued work item in case remove() ever runs while the freezable workqueue is still frozen, e.g. device removal during the resume window, before workqueues are thawed. This issue was found by an in-house static analysis tool.

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    • Linux Linux: 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 преди d1187a7deac1e90182372a188dfe33ddd2b53cba; 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 преди cbb3fcc7cd14396ccc1379c164d96a247331f2e6; 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 преди fb8cefd66a6055a313c993fa9e8bed9be9b088f6; 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 преди 158a07da2da720f2f98b4bea129212c6805d8ee0; 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 преди fb668620e3b163962dabe1a674725a07aa44ff4a; 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 преди 2c8614981d3e6e000427de0ab2426ab68274d850; 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 преди 247b8f680876313586aed4d267bfcceddc2b4901; 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 преди db0949bbd06db0a75b4b1076f1e25194be7d956a
    • Linux Linux: 2.6.30; преди 2.6.30; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.113 до 6.12.*; 6.18.56 до 6.18.*; 7.2.10 до 7.2.*; 7.3 до *

    История

    • 18 октомври 2026 Публикувано

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    CVE-2026-98749: Linux | freedomonline.bg