CVE-2024-56654
Bluetooth: hci_event: Fix using rcu_read_(un)lock while iterating
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: Fix using rcu_read_(un)lock while iterating The usage of rcu_read_(un)lock while inside list_for_each_entry_rcu is not safe since for the most part entries fetched this way shall be treated as rcu_dereference: Note that the value returned by rcu_dereference() is valid only within the enclosing RCU read-side critical section [1]_. For example, the following is **not** legal:: rcu_read_lock(); p = rcu_dereference(head.next); rcu_read_unlock(); x = p->address; /* BUG!!! */ rcu_read_lock(); y = p->data; /* BUG!!! */ rcu_read_unlock();
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 27, 2024 |
| Last Updated | May 11, 2026 |
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