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CVE-2026-90077: Linux

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: net: fix a resource leak in copy_net_ns() error handling path Currently, preinit_net() does two things: (1) call ns_common_init() which might fail (2) initialize resources which does not fail However, preinit_net() is returning early when (1) fails, and copy_net_ns() is jumping to the dec_ucounts: label. As a result, resources allocated by net_alloc() are leaking. We need to call key_remove_domain() and net_passive_dec() in order to release resources allocated by net_alloc(). We cannot simply jump to the put_userns: label when preinit_net() failed, for (2) is not yet done. But we can reorder (1) and (2), for there is no dependency between (1) and (2). Therefore, this patch decouples (1) from preinit_net() and changes preinit_net() back to a void function, and calls ns_common_init() after preinit_net() succeeded. Then, we can jump to immediately after ns_common_free() of the put_userns: label.

    Засегнати продукти

    • Linux Linux: 08027f6b790be1e444e4182fb4dc53faa6539d16 преди 76c847e80d2b6be047707d58e8e05eedbe2593ad; 08027f6b790be1e444e4182fb4dc53faa6539d16 преди e69bde4eb566aea8fa97cbb93e0bab608964f1a5; 08027f6b790be1e444e4182fb4dc53faa6539d16 преди 3220b62fbb8a55feebd2a826d5ead0f49f09ed5a
    • Linux Linux: 6.18; преди 6.18; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

    История

    • 17 септември 2026 Публикувано

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