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CVE-2026-98586: 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: sctp: hold asoc or transport before mod_timer() in timer handlers Take the association or transport reference before rearming a timer in the timer handlers. The existing code calls mod_timer() before taking the reference needed by the rearmed timer without holding the sock lock. This creates a race with timer cleanup: if the timer is deleted after mod_timer() returns but before the reference is taken, the cleanup path can drop the timer's reference and destroy the transport or association. The timer handler then takes a reference on the already freed object and eventually drops it, causing a refcount underflow. Hold the object before mod_timer() and drop the reference if mod_timer() reports that the timer was already pending in timer handlers. Apply the same ordering to the proto-unreachable path, which can rearm a transport timer outside the timer handlers without holding the sock lock.

    Засегнати продукти

    • Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди f7dea7eaea20fe9b80f8f77ba44d02b4a17f8050; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди f9d929026d487a988bfa12c065f892e823e5b6ab; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 9d3d39da054476e7aa05cd877b93ca73a9a77434; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 27c51a9b55b227309161c903f9ecfbf022516bc2; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди d18cb8fd1b6ba95c85de644203cfe1b071ff0c0f; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 35bf3b23c9a871f44c1453d85f8332be4e088dda; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди cae23ae3f7887a1cf8a75da38edcebeef695040f
    • Linux Linux: 2.6.12; преди 2.6.12; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.112 до 6.12.*; 6.18.55 до 6.18.*; 7.2.9 до 7.2.*; от 7.3 нататък

    История

    • 18 октомври 2026 Публикувано

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    Първоизточници

    CVE-2026-98586: Linux | freedomonline.bg