CVE-2023-53374
Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early Not calling hci_(dis)connect_cfm before deleting conn referred to by a socket generally results to use-after-free. When cleaning up SCO connections when the parent ACL is deleted too early, use hci_conn_failed to do the connection cleanup properly. We also need to clean up ISO connections in a similar situation when connecting has started but LE Create CIS is not yet sent, so do it too here.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 18, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
ca1fd42e7dbfcb34890ffbf1f2f4b356776dab6f < 397d58007532644b35fad746da48c41161f32a57 ca1fd42e7dbfcb34890ffbf1f2f4b356776dab6f < e94b898463a62b72a2a8b75dea8936bf4db78e00 ca1fd42e7dbfcb34890ffbf1f2f4b356776dab6f < 3344d318337d9dca928fd448e966557ec5063f85 75e35bd4b7935ceed2aacd82f55940e73bf0b63b
Linux / Linux
6.4