CVE-2026-68393
CVE-2026-68393: 1 tracked advisory record across Red Hat. Compare vendor sources.
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Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.0
High [CVE-2026-68393] extend conn_hash lookup critical sections
CVE-2026-68393Source published Source updated
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. This vulnerability arises from the incorrect handling of Read-Copy-Update (RCU) protected pointers outside their designated critical sections without proper reference counting.…
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
- Red Hat package: kernel-rt
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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