Към съдържанието
Търсене

CVE-2026-74575: Linux

8.8

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 от съседна мрежа, без особени условия, без вход и без действие от потребителя.

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

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Prevent XDomain delayed work use-after-free on disconnect tb_xdp_handle_request() runs on system_wq and queues xd->state_work via queue_delayed_work() in three request handlers: PROPERTIES_CHANGED_REQUEST, UUID_REQUEST (via start_handshake), and LINK_STATE_CHANGE_REQUEST. Similarly, update_xdomain() queues xd->properties_changed_work when local properties change. Concurrently, tb_xdomain_remove() calls stop_handshake() which does cancel_delayed_work_sync() on both delayed works. Later, tb_xdomain_unregister() calls device_unregister() which eventually frees the xdomain. Since commit 559c1e1e0134 ("thunderbolt: Run tb_xdp_handle_request() in system workqueue") moved the request handler off tb->wq, the handler and the remove path are no longer serialized. If queue_delayed_work() executes after cancel_delayed_work_sync() but before the xdomain is freed, the delayed work fires on a freed object. Add xd->removing that tb_xdomain_remove() sets under xd->lock before calling stop_handshake(). Each external queue site holds the same lock and checks removing before calling queue_delayed_work(). This provides the mutual exclusion needed: either the queue site acquires the lock first and queues work that the subsequent cancel will see, or the remove path acquires the lock first and the queue site observes removing == true and skips the queue.

Засегнати продукти

  • Linux Linux: 559c1e1e013437bf190469efbcbd8bc803285853 преди d4fa0d544c04dea636bf821ff5582cd7d63e2c34; 559c1e1e013437bf190469efbcbd8bc803285853 преди cfbd2dba3d862c9be8c92bea2a357d9ed828a54a; 559c1e1e013437bf190469efbcbd8bc803285853 преди dc11d5118f9da6ea28487ffe055de5a0d0734125; 559c1e1e013437bf190469efbcbd8bc803285853 преди 91b40862a02000f490b63f1d315be3ee31e83871; 559c1e1e013437bf190469efbcbd8bc803285853 преди 33c0ee18cf8665c974b00f4e0ba769fbc07efe10; 559c1e1e013437bf190469efbcbd8bc803285853 преди 54a62153c765cd24239cde1f2633f2a2fd005368; 559c1e1e013437bf190469efbcbd8bc803285853 преди 2aa2cde2cc79a79d8ea4a15be9f4a67fc528ae91; 559c1e1e013437bf190469efbcbd8bc803285853 преди 2c5d2d3c3f70cde2565d7b279b544893a2035842
  • Linux Linux: 5.2; преди 5.2; 5.10.266 до 5.10.*; 5.15.217 до 5.15.*; 6.1.184 до 6.1.*; 6.6.151 до 6.6.*; 6.12.103 до 6.12.*; 6.18.44 до 6.18.*; 7.1.8 до 7.1.*; от 7.2 нататък

История

  • 15 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-74575: Linux | freedomonline.bg