[Bug 217581] New: Bluetooth L2CAP use-after-free

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=217581

            Bug ID: 217581
           Summary: Bluetooth L2CAP use-after-free
           Product: Drivers
           Version: 2.5
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: high
          Priority: P3
         Component: Bluetooth
          Assignee: linux-bluetooth@vger.kernel.org
          Reporter: mohamed-yassine.jebabli@witbe.net
        Regression: No

In reconnect slave mode, I start direct advertising. After establishing the
connection with the central device, we begin ATT exchanges over the L2CAP
socket, and then I receive a disconnect with L2CAP traces. This issue is
observed across different kernel versions such as 5.17, 6.2, 6.3, 6.3.7, etc.

Kernel log with bluetooth debugfs activated.

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