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CVE-2026-97940: Linux

7.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: ipv6: fix fib6 walker UAF on seq stop ipv6_route_iter_active() treats a walker in FWS_U at the table root as already unlinked. fib6_del_route() can move a still-linked walker into that same state when the current leaf is the last route at the root, so ipv6_route_native_seq_stop() skips fib6_walker_unlink(). The seq private object can then be freed while it remains on net->ipv6.fib6_walkers. A later route deletion walks the dangling list and uses the freed walker. Use the list head as membership state and reinitialize it when unlinking. Keep the existing w->node check so a never-started iterator with a zeroed private object is not treated as linked. The same stop helper is used by /proc/net/ipv6_route and by the BPF ipv6_route iterator. The BPF show path only widens the race.

    Засегнати продукти

    • Linux Linux: 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 преди 9a3f73d62c86271614eda4c43315230896a37018; 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 преди 63407cddabc5992b5ac03af165559f4a1968a032; 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 преди 05b687ee04f816658f4a9cf586f4d2f129157943; 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 преди 14fdaba201fdff92a3e45994e02bccda409cb19d; 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 преди 0eede1689610e9eeaf729ba86fd1321799eb91a0; 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 преди b89b691dd00bf39b9ba39ab9446f8c62f419fa7b; 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 преди 4553cfafa8d05c4ce20b1d18f79d9bb3b303fc02; 8d2ca1d7b5c3e63b3a8a81ae99015b615c5f2bf7 преди 19b4ed644d68098cc62ab612727f40d30f43476c
    • Linux Linux: 3.13; преди 3.13; 5.10.271 до 5.10.*; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.111 до 6.12.*; 6.18.53 до 6.18.*; 7.2.7 до 7.2.*; от 7.3 нататък

    История

    • 25 септември 2026 Публикувано

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