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CVE-2026-43421: 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: usb: gadget: f_ncm: Fix net_device lifecycle with device_move The network device outlived its parent gadget device during disconnection, resulting in dangling sysfs links and null pointer dereference problems. A prior attempt to solve this by removing SET_NETDEV_DEV entirely [1] was reverted due to power management ordering concerns and a NO-CARRIER regression. A subsequent attempt to defer net_device allocation to bind [2] broke 1:1 mapping between function instance and network device, making it impossible for configfs to report the resolved interface name. This results in a regression where the DHCP server fails on pmOS. Use device_move to reparent the net_device between the gadget device and /sys/devices/virtual/ across bind/unbind cycles. This preserves the network interface across USB reconnection, allowing the DHCP server to retain their binding. Introduce gether_attach_gadget()/gether_detach_gadget() helpers and use __free(detach_gadget) macro to undo attachment on bind failure. The bind_count ensures device_move executes only on the first bind. [1] https://lore.kernel.org/lkml/[email protected]/ [2] https://lore.kernel.org/linux-usb/[email protected]/

    Засегнати продукти

    • Linux Linux: 40d133d7f542616cf9538508a372306e626a16e9 преди 7c97366f5dac5255e60a317ffe3a5b18f3745547; 40d133d7f542616cf9538508a372306e626a16e9 преди 36c41e9724c9a7a7cda37f5a4e9d94f25c8031c4; 40d133d7f542616cf9538508a372306e626a16e9 преди 93f116c3393a22acab96ad1bef12b2572eb80ca4; 40d133d7f542616cf9538508a372306e626a16e9 преди e584cb58a2ea7ff4d3a4bc43d5ca512ed3ecb77d; 40d133d7f542616cf9538508a372306e626a16e9 преди 85acaba2f42b557499bab3608307f17bf13beb69; 40d133d7f542616cf9538508a372306e626a16e9 преди ec35c1969650e7cb6c8a91020e568ed46e3551b0
    • Linux Linux: 3.11; преди 3.11; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.78 до 6.12.*; 6.18.19 до 6.18.*; 6.19.9 до 6.19.*; 7.0 до *
    • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: преди *

    История

    • 8 май 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-43421: Linux | freedomonline.bg