CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: mptcp: fix uninitialized local_id in syncookie MP_JOIN reconstruction mptcp_token_join_cookie_init_state() restores remote_nonce, local_nonce, backup, join_id, token and msk from the saved cookie entry when rebuilding the request socket for a MP_JOIN 4th-ACK handled under SYN cookies, but it does not restore local_id, even though the SYN path saved it. subflow_ulp_clone() then reads that uninitialized field and stores it as the joined subflow's address-ID. Because the request-sock slab is SLAB_TYPESAFE_BY_RCU and not zeroed on allocation, the value is the stale byte of a previously freed request socket, which an off-path peer can influence by sending concurrent MP_JOIN SYNs. This corrupts the path manager's id-based subflow bookkeeping for the connection. Restore subflow_req->local_id from the cookie entry, as done for the other fields.
Засегнати продукти
- Linux Linux: 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 преди 4534e0eead692bb069ad1e6a5a245fc2e2078300; 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 преди 63cacb05e51a1c6e1349d2e593d00fd6ef43def4; 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 преди 954b5ea836eb118d188975ced803448537ab8479; 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 преди 9df36a4846375a9b75bf42d77bfed216b0f366f9; 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 преди 64f2c5dd49b956a542c8c02b8dad5d262a462bba; 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 преди 51887ccd88791ddaa8755a7c614fda031ecf7982; 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 преди bf19d166337c6488b39cb03eeeffb30a941d6326; 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 преди b878dfdd12d7a5b8722a78d35e313506140ca3d9
- Linux Linux: 5.9; преди 5.9; 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
- https://www.cve.org/CVERecord?id=CVE-2026-89554
- https://nvd.nist.gov/vuln/detail/CVE-2026-89554
- https://git.kernel.org/stable/c/4534e0eead692bb069ad1e6a5a245fc2e2078300
- https://git.kernel.org/stable/c/63cacb05e51a1c6e1349d2e593d00fd6ef43def4
- https://git.kernel.org/stable/c/954b5ea836eb118d188975ced803448537ab8479
- https://git.kernel.org/stable/c/9df36a4846375a9b75bf42d77bfed216b0f366f9
- https://git.kernel.org/stable/c/64f2c5dd49b956a542c8c02b8dad5d262a462bba
- https://git.kernel.org/stable/c/51887ccd88791ddaa8755a7c614fda031ecf7982
- https://git.kernel.org/stable/c/bf19d166337c6488b39cb03eeeffb30a941d6326
- https://git.kernel.org/stable/c/b878dfdd12d7a5b8722a78d35e313506140ca3d9