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CVE-2026-68271: 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: drm/nouveau: fix reversed error cleanup order in ucopy functions nouveau_uvmm_vm_bind_ucopy() and nouveau_exec_ucopy() place their error cleanup labels in allocation order rather than reverse allocation order. On a u_memcpya() failure for in_sync.s, the goto to err_free_ops (or err_free_pushs) frees the first allocation and then falls through to err_free_ins, which calls u_free() on args->in_sync.s. Since args->in_sync.s still holds the ERR_PTR returned by the failed u_memcpya(), and ERR_PTR values are not caught by ZERO_OR_NULL_PTR(), kvfree() proceeds to dereference it, which can result in a kernel oops. A failure for out_sync.s instead jumps to err_free_ins and skips freeing the first allocation, leading to a memory leak. Fix by swapping the cleanup label order so resources are freed in the correct reverse allocation sequence.

    Засегнати продукти

    • Linux Linux: b88baab828713ce0b49b185444b2ee83bed373a8 преди 2473ac314387a5def7244eb6d6a345934ed140bf; b88baab828713ce0b49b185444b2ee83bed373a8 преди e15c25c7972d38a9f6bf8c3f7f29179a67263eba; b88baab828713ce0b49b185444b2ee83bed373a8 преди 4e109faa9ea2b6c04cc5a99e76db3126575a59d1; b88baab828713ce0b49b185444b2ee83bed373a8 преди ebbaf64d2635d1e78196c067fa8fa582a7dc17f7; b88baab828713ce0b49b185444b2ee83bed373a8 преди ab99ead646b1b833ecd57fe577a2816f2e848167
    • Linux Linux: 6.6; преди 6.6; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

    История

    • 10 август 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-68271: Linux | freedomonline.bg