CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски 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: Bluetooth: hci_conn: fix potential UAF in create_big_sync Add hci_conn_valid() check in create_big_sync() to detect stale connections before proceeding with BIG creation. Handle the resulting -ECANCELED in create_big_complete() and re-validate the connection under hci_dev_lock() before dereferencing, matching the pattern used by create_le_conn_complete() and create_pa_complete(). Keep the hci_conn object alive across the async boundary by taking a reference via hci_conn_get() when queueing create_big_sync(), and dropping it in the completion callback. The refcount and the lock are complementary: the refcount keeps the object allocated, while hci_dev_lock() serializes hci_conn_hash_del()'s list_del_rcu() on hdev->conn_hash, as required by hci_conn_del(). hci_conn_put() is called outside hci_dev_unlock() so the final put (which resolves to kfree() via bt_link_release) does not run under hdev->lock, though the release path would be safe either way. Without this, create_big_complete() would unconditionally dereference the conn pointer on error, causing a use-after-free via hci_connect_cfm() and hci_conn_del().
Засегнати продукти
- Linux Linux: eca0ae4aea66914515e5e3098ea051b518ee5316 преди d41093723e47255d7d74df86e2736711c1b8486e; eca0ae4aea66914515e5e3098ea051b518ee5316 преди 6823f730bf195fc296d9edd09e2ca94bc1ff5584; eca0ae4aea66914515e5e3098ea051b518ee5316 преди 1750a2df0eab61dc421a7afae74abdd239a44b85; eca0ae4aea66914515e5e3098ea051b518ee5316 преди dc34f8d8240f25dd137dc2758ebbcc75e3779142; eca0ae4aea66914515e5e3098ea051b518ee5316 преди f8eaf92c57ad99358dd372580d5ff87623343a72; eca0ae4aea66914515e5e3098ea051b518ee5316 преди 0beddb0c380bed5f5b8e61ddbe14635bb73d0b41
- Linux Linux: 6.0; преди 6.0; 6.1.183 до 6.1.*; 6.6.140 до 6.6.*; 6.12.90 до 6.12.*; 6.18.32 до 6.18.*; 7.0.7 до 7.0.*; от 7.1 нататък
Вид слабост
История
- 28 май 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-46111
- https://nvd.nist.gov/vuln/detail/CVE-2026-46111
- https://git.kernel.org/stable/c/d41093723e47255d7d74df86e2736711c1b8486e
- https://git.kernel.org/stable/c/6823f730bf195fc296d9edd09e2ca94bc1ff5584
- https://git.kernel.org/stable/c/1750a2df0eab61dc421a7afae74abdd239a44b85
- https://git.kernel.org/stable/c/dc34f8d8240f25dd137dc2758ebbcc75e3779142
- https://git.kernel.org/stable/c/f8eaf92c57ad99358dd372580d5ff87623343a72
- https://git.kernel.org/stable/c/0beddb0c380bed5f5b8e61ddbe14635bb73d0b41