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CVE-2026-43094: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: ixgbevf: add missing negotiate_features op to Hyper-V ops table Commit a7075f501bd3 ("ixgbevf: fix mailbox API compatibility by negotiating supported features") added the .negotiate_features callback to ixgbe_mac_operations and populated it in ixgbevf_mac_ops, but forgot to add it to ixgbevf_hv_mac_ops. This leaves the function pointer NULL on Hyper-V VMs. During probe, ixgbevf_negotiate_api() calls ixgbevf_set_features(), which unconditionally dereferences hw->mac.ops.negotiate_features(). On Hyper-V this results in a NULL pointer dereference: BUG: kernel NULL pointer dereference, address: 0000000000000000 [...] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine [...] Workqueue: events work_for_cpu_fn RIP: 0010:0x0 [...] Call Trace: ixgbevf_negotiate_api+0x66/0x160 [ixgbevf] ixgbevf_sw_init+0xe4/0x1f0 [ixgbevf] ixgbevf_probe+0x20f/0x4a0 [ixgbevf] local_pci_probe+0x50/0xa0 work_for_cpu_fn+0x1a/0x30 [...] Add ixgbevf_hv_negotiate_features_vf() that returns -EOPNOTSUPP and wire it into ixgbevf_hv_mac_ops. The caller already handles -EOPNOTSUPP gracefully.

    Засегнати продукти

    • Linux Linux: 871ac1cd4ce4804defcb428cbb003fd84c415ff4 преди 376d74ea03589914fbe2dedcbebf418396c04fd0; 2e0aab9ddaf1428602c78f12064cd1e6ffcc4d18 преди d8a747057a17ffc79e31df1abb11d05e1669d8e5; bf580112ed61736c2645a893413a04732505d4b1 преди 2270ebab53128fb73c4a70a292be09094074737f; a7075f501bd33c93570af759b6f4302ef0175168 преди 4db7b61ec1d1b2b67c0881b62fc4f9583bc21484; a7075f501bd33c93570af759b6f4302ef0175168 преди 1455ff8809843e6e83f1f5b5c0bcc2224c99a3cb; a7075f501bd33c93570af759b6f4302ef0175168 преди 4821d563cd7f251ae728be1a6d04af82a294a5b9; a376e29b1b196dc90b50df7e5e3947e3026300c4; 6.1.158 преди 6.1.175; 6.6.114 преди 6.6.136; 6.12.55 преди 6.12.83; 6.17.5 преди 6.18
    • Linux Linux: 6.18; преди 6.18; 6.1.175 до 6.1.*; 6.6.136 до 6.6.*; 6.12.83 до 6.12.*; 6.18.24 до 6.18.*; 6.19.14 до 6.19.*; от 7.0 нататък
    • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: всички версии

    История

    • 6 май 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-43094: Linux | freedomonline.bg