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 https://git.kernel.org/stable/c/2efe67c581a2a6122b328d4bb6f21b3f36f40d46 https://git.kernel.org/stable/c/5aa514100aaf59868d745196258269a16737c7bd https://git.kernel.org/stable/c/5c15c60e7be615f05a45cd905093a54b11f461bc https://git.kernel.org/stable/c/67cace72606baf1758fd60feb358f4c6be92e1cc https://git.kernel.org/stable/c/6a4a396386404e62fb59bc3bde48871a64a82b4f https://git.kernel.org/stable/c/8677575c4f39d65bf0d719b5d20e8042e550ccb9 https://git.kernel.org/stable/c/cd2fbfd8b922b7fdd50732e47d797754ab59cb06 https://git.kernel.org/stable/c/e528b1b9d60743e0b26224e3fe7aa74c24b8b2f8
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 2267874]
This was fixed for Fedora with the 6.5.8 stable kernel updates.