输入：powermate - 修复 powermate_config_complete 中的释放后使用 (CVE-2023-52475)
CVE编号
CVE-2023-52475利用情况
暂无补丁情况
N/A披露时间
2024-02-29漏洞描述
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解决建议
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