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CVE-2026-31476: Linux

8.2

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 по мрежата, без особени условия, без вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: ksmbd: do not expire session on binding failure When a multichannel session binding request fails (e.g. wrong password), the error path unconditionally sets sess->state = SMB2_SESSION_EXPIRED. However, during binding, sess points to the target session looked up via ksmbd_session_lookup_slowpath() -- which belongs to another connection's user. This allows a remote attacker to invalidate any active session by simply sending a binding request with a wrong password (DoS). Fix this by skipping session expiration when the failed request was a binding attempt, since the session does not belong to the current connection. The reference taken by ksmbd_session_lookup_slowpath() is still correctly released via ksmbd_user_session_put().

    Засегнати продукти

    • Linux Linux: f5a544e3bab78142207e0242d22442db85ba1eff преди 4642ea35c03cf3d3558c009df4757cdb7af3f82d; f5a544e3bab78142207e0242d22442db85ba1eff преди f5300690c23c5ac860499bb37dbc09cf43fd62e6; f5a544e3bab78142207e0242d22442db85ba1eff преди 6fafc4c4238e538969f1375f9ecdc6587c53f1cc; f5a544e3bab78142207e0242d22442db85ba1eff преди 1d1888b4a7aec518b707f6eca0bf08992c0e8da3; f5a544e3bab78142207e0242d22442db85ba1eff преди a897064a457056acb976e20e3007cdf553de340f; f5a544e3bab78142207e0242d22442db85ba1eff преди e0e5edc81b241c70355217de7e120c97c3429deb; f5a544e3bab78142207e0242d22442db85ba1eff преди 9bbb19d21ded7d78645506f20d8c44895e3d0fb9
    • Linux Linux: 5.15; преди 5.15; 5.15.209 до 5.15.*; 6.1.168 до 6.1.*; 6.6.131 до 6.6.*; 6.12.80 до 6.12.*; 6.18.21 до 6.18.*; 6.19.11 до 6.19.*; 7.0 до *

    История

    • 22 април 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-31476: Linux | freedomonline.bg