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CVE-2026-74696: Linux

7.5

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.

  • Експлоатация: няма данни за експлоатация
  • Атаката може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: tcp: fix TFO max_qlen accounting across reuseport migration A listener's TCP_FASTOPEN max_qlen stops being accurate and lets through far more pending Fast Open requests than it was configured for. This only shows up with SO_REUSEPORT listener migration, where closing a listener hands its still-pending TFO children over to a surviving one. fastopenq.qlen is charged in tcp_fastopen_create_child() when the child is created and uncharged in reqsk_fastopen_remove() when the handshake completes. The uncharge follows rsk_listener of the request the child points at, and inet_reqsk_clone() has repointed the child at a new request owned by the new listener, so the ++ and the -- land on two different sockets. The new listener's qlen drifts negative and its limit no longer binds. Charge the new listener during migration, like reqsk_queue_migrated() already does for queue->young and queue->qlen.

Засегнати продукти

  • Linux Linux: 54b92e84193749c9968aff2dd46e3b0f42643e18 преди e98f0d80b9cccb5f828425d2004f9686e7d1ae24; 54b92e84193749c9968aff2dd46e3b0f42643e18 преди b6247e0f96bd825ffb2005257f6177b5e642dee6; 54b92e84193749c9968aff2dd46e3b0f42643e18 преди 585fc5247d14939a561056aa2addd9b7c2b1f670; 54b92e84193749c9968aff2dd46e3b0f42643e18 преди 6e10ee56524a26b250229ad348637825646ddb88; 54b92e84193749c9968aff2dd46e3b0f42643e18 преди a66e869cf0c90c1e47ae75f72b6482acbfc808ff; 54b92e84193749c9968aff2dd46e3b0f42643e18 преди d974618b2097453778389d385e3741629c40e0a3; 54b92e84193749c9968aff2dd46e3b0f42643e18 преди a0ab2ba83e35159d81cec830a92e885ecf8139be
  • Linux Linux: 5.14; преди 5.14; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.152 до 6.6.*; 6.12.104 до 6.12.*; 6.18.45 до 6.18.*; 7.1.9 до 7.1.*; от 7.2 нататък

История

  • 22 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-74696: Linux | freedomonline.bg