CVE-2023-53297 – Bluetooth: L2CAP: fix “bad unlock balance” in l2cap_disconnect_rsp

CVE ID : CVE-2023-53297

Published : Sept. 16, 2025, 8:11 a.m. | 44 minutes ago

Description : In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: L2CAP: fix “bad unlock balance” in l2cap_disconnect_rsp

conn->chan_lock isn’t acquired before l2cap_get_chan_by_scid,
if l2cap_get_chan_by_scid returns NULL, then ‘bad unlock balance’
is triggered.

Severity: 0.0 | NA

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