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CVE-2026-52979: 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: net: psp: check for device unregister when creating assoc psp_assoc_device_get_locked() obtains a psp_dev reference via psp_dev_get_for_sock() (which uses psp_dev_tryget() under RCU); it then acquires psd->lock and drops the reference. Before the lock is taken, psp_dev_unregister() can run to completion: take psd->lock, clear out state, unlock, drop the registration reference. The expectation is that the lock prevents device unregistration, but much like with netdevs special care has to be taken when "upgrading" a reference to a locked device. Add the missing check if device is still alive. psp_dev_is_registered() exists already but had no callers, which makes me wonder if I either forgot to add this or lost the check during refactoring...

    Засегнати продукти

    • Linux Linux: 6b46ca260e2290e3453d1355ab5b6d283d73d780 преди d90df5ce6deb2424de3ad89bcc693ac1b67accc9; 6b46ca260e2290e3453d1355ab5b6d283d73d780 преди e201c57073e624dd2ba5beaf9eda31e19b77b332; 6b46ca260e2290e3453d1355ab5b6d283d73d780 преди b89769f936a8fa9e66de72ddc1b71a9745a488e6
    • Linux Linux: 6.18; преди 6.18; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; от 7.1 нататък

    История

    • 24 юни 2026 Публикувано

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    Първоизточници

    CVE-2026-52979: Linux | freedomonline.bg