Answer in brief
CVE-2026-68393 records a Unknown severity vulnerability in Bluetooth: hci_sync: extend conn_hash lookup critical sections. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6d0417e4e1cf66fd917f06f0454958362714ef7d <83b7e67698d0b93f685875ce82c8d335436834f7 || >=6d0417e4e1cf66fd917f06f0454958362714ef7d <38326774df6198df0cc2744cc73bf77cb741c538 || >=6d0417e4e1cf66fd917f06f0454958362714ef7d <d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d || eb8b860e87b296bd1874c79a668081efd00f9754 || 94bf6380e936339a700c0b3171a49baf512aa70b || >=6.12.28 <6.13 || >=6.14.6 <6.15 | 83b7e67698d0b93f685875ce82c8d335436834f7, 38326774df6198df0cc2744cc73bf77cb741c538, d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d, 6.13, 6.15 |
| Linux/Linuxgeneric | 6.15 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-68393 records a Unknown severity vulnerability in Bluetooth: hci_sync: extend conn_hash lookup critical sections. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6d0417e4e1cf66fd917f06f0454958362714ef7d <83b7e67698d0b93f685875ce82c8d335436834f7 || >=6d0417e4e1cf66fd917f06f0454958362714ef7d <38326774df6198df0cc2744cc73bf77cb741c538 || >=6d0417e4e1cf66fd917f06f0454958362714ef7d <d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d || eb8b860e87b296bd1874c79a668081efd00f9754 || 94bf6380e936339a700c0b3171a49baf512aa70b || >=6.12.28 <6.13 || >=6.14.6 <6.15 | 83b7e67698d0b93f685875ce82c8d335436834f7, 38326774df6198df0cc2744cc73bf77cb741c538, d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d, 6.13, 6.15 |
| Linux/Linuxgeneric | 6.15 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.