Vulnerability CVE-2023-52475
Published: 2024-02-29

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

Input: powermate - fix use-after-free in powermate_config_complete

syzbot has found a use-after-free bug [1] in the powermate driver. This
happens when the device is disconnected, which leads to a memory free from
the powermate_device struct. When an asynchronous control message
completes after the kfree and its callback is invoked, the lock does not
exist anymore and hence the bug.

Use usb_kill_urb() on pm->config to cancel any in-progress requests upon
device disconnection.

[1] https://syzkaller.appspot.com/bug?extid=0434ac83f907a1dbdd1e

 References:
https://git.kernel.org/stable/c/8677575c4f39d65bf0d719b5d20e8042e550ccb9
https://git.kernel.org/stable/c/67cace72606baf1758fd60feb358f4c6be92e1cc
https://git.kernel.org/stable/c/5aa514100aaf59868d745196258269a16737c7bd
https://git.kernel.org/stable/c/cd2fbfd8b922b7fdd50732e47d797754ab59cb06
https://git.kernel.org/stable/c/6a4a396386404e62fb59bc3bde48871a64a82b4f
https://git.kernel.org/stable/c/2efe67c581a2a6122b328d4bb6f21b3f36f40d46
https://git.kernel.org/stable/c/e528b1b9d60743e0b26224e3fe7aa74c24b8b2f8
https://git.kernel.org/stable/c/5c15c60e7be615f05a45cd905093a54b11f461bc
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