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CVE-2026-68393

8.8 high SSVC exploitation: none Published
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 6

  1. StatusReceived → PublishedNVD modified 2026-10-21 12:43
  2. References+1 references (now 4)NVD modified 2026-10-21 13:19
  3. StatusPublished → ReceivedNVD modified 2026-10-21 13:19
  4. StatusReceived → PublishedNVD modified 2026-10-19 21:09
  5. CwesCWE-416NVD modified 2026-10-19 22:17
  6. First seenCVSS 8.8NVD modified 2026-10-16 16:19

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 4