CVE-2026-68393

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/38326774df6198df0cc2744cc73bf77cb741c538
https://git.kernel.org/stable/c/83b7e67698d0b93f685875ce82c8d335436834f7
https://git.kernel.org/stable/c/d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-10 13:20

Updated : 2026-08-17 06:17

NVD link : CVE-2026-68393

Mitre link : CVE-2026-68393

CVE.ORG link : CVE-2026-68393

JSON object : View

Products Affected

No product.

CWE

No CWE.

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