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CVE-2026-23293: 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: net: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled When booting with the 'ipv6.disable=1' parameter, the nd_tbl is never initialized because inet6_init() exits before ndisc_init() is called which initializes it. If an IPv6 packet is injected into the interface, route_shortcircuit() is called and a NULL pointer dereference happens on neigh_lookup(). BUG: kernel NULL pointer dereference, address: 0000000000000380 Oops: Oops: 0000 [#1] SMP NOPTI [...] RIP: 0010:neigh_lookup+0x20/0x270 [...] Call Trace: <TASK> vxlan_xmit+0x638/0x1ef0 [vxlan] dev_hard_start_xmit+0x9e/0x2e0 __dev_queue_xmit+0xbee/0x14e0 packet_sendmsg+0x116f/0x1930 __sys_sendto+0x1f5/0x200 __x64_sys_sendto+0x24/0x30 do_syscall_64+0x12f/0x1590 entry_SYSCALL_64_after_hwframe+0x76/0x7e Fix this by adding an early check on route_shortcircuit() when protocol is ETH_P_IPV6. Note that ipv6_mod_enabled() cannot be used here because VXLAN can be built-in even when IPv6 is built as a module.

    Засегнати продукти

    • Linux Linux: e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 преди 649e2bb74da54c96cf20729001e283626a2fefa0; e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 преди dc3e62cf3bbf66280a907ec379f373d0c3b8b2bc; e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 преди b5190fcd75a1f1785c766a8d1e44d3938e168f45; e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 преди 5f93e6b4d12bd3a4517a6d447ea675f448f21434; e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 преди f0373e9317bc904e7bdb123d3106fe4f3cea2fb7; e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 преди fbbd2118982c55fb9b0a753ae0cf7194e77149fb; e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 преди abcd48ecdeb2e12eccb8339a35534c757782afcd; e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 преди 168ff39e4758897d2eee4756977d036d52884c7e
    • Linux Linux: 3.12; преди 3.12; 5.10.253 до 5.10.*; 5.15.203 до 5.15.*; 6.1.167 до 6.1.*; 6.6.130 до 6.6.*; 6.12.77 до 6.12.*; 6.18.17 до 6.18.*; 6.19.7 до 6.19.*; от 7.0 нататък
    • Siemens: още 3 продукта, добавени от Siemens

      SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP, SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

    История

    • 25 март 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-23293: Linux | freedomonline.bg