kernel: Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: fix "bad unlock balance" in l2capdisconnectrsp conn-chanlock isn't acquired before l2capgetchanbyscid, if l2capgetchanbyscid returns NULL, then 'bad unlock balance' is triggered...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from not properly acquiring conn-chanlock in l2capdisconnectrsp, which could lead to a lock balancing error...