CVE-2026-68393 (GCVE-0-2026-68393)
Vulnerability from cvelistv5
Published
2026-08-10 12:04
Modified
2026-10-21 12:43
Severity ?
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: eb8b860e87b296bd1874c79a668081efd00f9754
Version: 6d0417e4e1cf66fd917f06f0454958362714ef7d
Version: 6d0417e4e1cf66fd917f06f0454958362714ef7d
Version: 6d0417e4e1cf66fd917f06f0454958362714ef7d
Version: 94bf6380e936339a700c0b3171a49baf512aa70b
Version: 6.12.28   ≤
Version: 6.14.6   ≤
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