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CVE-2026-99054: Linux

7.8

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 локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: tipc: destroy topsrv workqueues before closing connections tipc_topsrv_stop() closed subscriber connections while the topology server's send and receive workqueues were still running. Socket callbacks and subscription events could then queue more work, and in-flight send/recv work could drop the last connection reference during the conn_idr walk. That race produced several teardown failures: refcount_t addition on 0 from conn_get() on a connection whose release was blocked on idr_lock, a subsequent use-after-free in tipc_conn_close(), queue_work() on an already destroyed workqueue from the listener data-ready callback, and an RCU stall in tipc_topsrv_exit_net() while the walk spun under idr_lock. Clear srv->listener under idr_lock so it acts as a shutdown flag, skip queue_work() once it is NULL, destroy the workqueues to flush in-flight work, and only then close the remaining connections. Refuse tipc_conn_lookup() after that flag is cleared, and drop idr_lock when the teardown walk finds no connection, so an in-flight subscription event cannot pin idr_in_use while the walk holds the lock. v3 supersedes the narrower in-thread diff Tung Quang Nguyen posted on 2026-09-23. It keeps his teardown order and adds the lookup refusal and the empty-idr unlock.

    Засегнати продукти

    • Linux Linux: c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f преди 09dbd610f78aaed65d7b379c270ce4090a8151ac; c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f преди 21622e5ae8b232c2e64eb1adf5546cf078d2987d; c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f преди 7167afaaaee37191f8b6afa0c91e0fef41460705; c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f преди 7f796bb3b440d7f1b14c0e3b520462eb34f553af; c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f преди da9c16568bc79140a54c1f5fcf07a0305df47b37; c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f преди 0af8780bdfdfc91fb9127bddb9c48fab67dc9d9e; c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f преди fb717c536af2aafeca520ff11d1e0f25f7ab8fa9; c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f преди 3acdd44385bc7e2e57605e073691ce69cc5a960d
    • Linux Linux: 3.11; преди 3.11; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.113 до 6.12.*; 6.18.57 до 6.18.*; 7.2.11 до 7.2.*; от 7.3 нататък

    История

    • 23 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-99054: Linux | freedomonline.bg