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CVE-2026-80788: Linux

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Do not WARN on remotely-controlled oversized SGL allocations When fuzzing the nvme target code, I tripped a kernel warning in nvmet_tcp_map_data() because the length passed into the allocator is controlled by the remote initiator. A remote initiator that sends a command with an SGL claiming a huge number, can create a scatterlist and iovec allocation of over 1 million entries, which causes the backing kmalloc call to exceed MAX_PAGE_ORDER and then the page allocator will trip on a WARN_ON_ONCE_GFP() message: WARNING: mm/page_alloc.c:5280 __alloc_frozen_pages_noprof Workqueue: nvmet_tcp_wq nvmet_tcp_io_work ... sgl_alloc_order nvmet_tcp_map_data nvmet_tcp_try_recv_pdu As it's never good to trip a kernel warning remotely due to many systems having panic-on-warn enabled, let's silence it by just add GFP_NOWARN to the allocation flags.

    Засегнати продукти

    • Linux Linux: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 преди 8d01f0d0e96485e39ad89b859ef85e1dc3020465; 872d26a391da92ed8f0c0f5cb5fef428067b7f30 преди 7b6a54d4e7b0da423c2b53ed293fd36b16c0b19e; 872d26a391da92ed8f0c0f5cb5fef428067b7f30 преди e7077e6c45423dd2bb7de7b5fc4b018a8e6c4741; 872d26a391da92ed8f0c0f5cb5fef428067b7f30 преди 86cc450022473c4a29b43a09f3ec22a9ef566dac; 872d26a391da92ed8f0c0f5cb5fef428067b7f30 преди c509f20be1cabda3087810bb2d658d66b3f31f35; 872d26a391da92ed8f0c0f5cb5fef428067b7f30 преди 9c95f7e66c62ee6c6abedcf1c04311f430ff5833; 872d26a391da92ed8f0c0f5cb5fef428067b7f30 преди 7fd6da0f28932442b51658bac4ff55565ca9b377; 872d26a391da92ed8f0c0f5cb5fef428067b7f30 преди 9b770e40bc00381e5ebf53653de5776773415be3; 872d26a391da92ed8f0c0f5cb5fef428067b7f30 преди 737a3b535247226f6e1a7988fd9d6e63e7d6fc71
    • Linux Linux: 5.0; преди 5.0; 5.10.267 до 5.10.*; 5.15.218 до 5.15.*; 6.1.185 до 6.1.*; 6.6.154 до 6.6.*; 6.12.106 до 6.12.*; 6.18.47 до 6.18.*; 7.1.11 до 7.1.*; 7.2.1 до 7.2.*; от 7.3 нататък

    История

    • 4 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-80788: Linux | freedomonline.bg