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CVE-2026-89669: Linux

9.8

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 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: nfsd: initialize copy-notify stateid before publishing it nfsd4_copy_notify() finished initializing the cpntf state after nfs4_alloc_init_cpntf_state() had already linked it into the s2s_cp_stateids IDR and the parent's sc_cp_list, with cs_count == 1 (the membership reference) and none held for the caller. A racing OFFLOAD_CANCEL (crafted cl_id == nn->s2s_cp_cl_id plus the guessable so_id) could reach manage_cpntf_state() and free the entry, turning the caller's subsequent cpn_cnr_stateid read and cp_p_stateid/cp_p_clid writes into use-after-free. The owning clientid was also only recorded after publication, so it could not gate an ownership check in that window. Record cp_p_stateid and cp_p_clid inside nfs4_alloc_init_cpntf_state() before nfs4_init_cp_state() publishes the entry, and return it with an extra reference. The caller reads the stateid under that reference and drops it with nfs4_put_cpntf_state(); on a late error the laundromat reaps the entry.

    Засегнати продукти

    • Linux Linux: 624322f1adc58acd0b69f77a6ddc764207e97241 преди 863b6e995665472f2af5be2436a874ab6a9e5ac6; 624322f1adc58acd0b69f77a6ddc764207e97241 преди d18d36395d973ef7372c8e6724970585f75b5c0b; 624322f1adc58acd0b69f77a6ddc764207e97241 преди 4415a692346a39fdb647cbd717eda510159aaf55; 624322f1adc58acd0b69f77a6ddc764207e97241 преди 9caad13b7cfe9ccb90cc405ac77335800e086595; 624322f1adc58acd0b69f77a6ddc764207e97241 преди e08a3dcaca0505f861e344a387f37f94d95dbdc2; 624322f1adc58acd0b69f77a6ddc764207e97241 преди a4d7fedcaaf33e60a01e53eafca9041ef966212f; 624322f1adc58acd0b69f77a6ddc764207e97241 преди 4cdef96892f4fa6e70c405b6e8f2fd6972f3b64b; 624322f1adc58acd0b69f77a6ddc764207e97241 преди 129643893b79f8a3c6b72045f933fbab5ee424ca
    • Linux Linux: 5.6; преди 5.6; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

    История

    • 11 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-89669: Linux | freedomonline.bg