CVE-2026-68393
Received
Received - Intake
Bluetooth Use-After-Free in Linux Kernel
Vulnerability report for CVE-2026-68393, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-08-10
Last updated on: 2026-08-10
Assigner: kernel.org
Description
Description
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 Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
Currently, no data is known.
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
