Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: extend conn_hash lookup critical sections Using RCU-protected pointers outside the critical sections without refcount is incorrect and may result to UAF. Extend critical section to cover both hci_conn_hash lookup and use of the returned conn. Add surrounding rcu_read_lock() also when return value is not used, in preparation for RCU lockdep requirement to hci_lookup_le_connect(). This avoids concurrent deletion of the conn before we are done dereferencing it. Also, make sure to hold hdev->lock when accessing hdev->accept_list.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected eb8b860e87b296bd1874c79a668081efd00f9754 before 3f98e7f38e1bb761a9964a8851f9c08e9c23b3dd; affected 6d0417e4e1cf66fd917f06f0454958362714ef7d before 83b7e67698d0b93f685875ce82c8d335436834f7; affected 6d0417e4e1cf66fd917f06f0454958362714ef7d before 38326774df6198df0cc2744cc73bf77cb741c538; affected 6d0417e4e1cf66fd917f06f0454958362714ef7d before d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d; affected 94bf6380e936339a700c0b3171a49baf512aa70b; affected 6.12.28 before 6.12.114; affected 6.14.6 before 6.15 |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 6.12.114 through 6.12.*; unaffected 6.18.42 through 6.18.*; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3f98e7f38e1bb761a9964a8851f9c08e9c23b3dd
- https://git.kernel.org/stable/c/83b7e67698d0b93f685875ce82c8d335436834f7
- https://git.kernel.org/stable/c/38326774df6198df0cc2744cc73bf77cb741c538
- https://git.kernel.org/stable/c/d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d
ADP enrichment
No English description supplied.
No references supplied.