Shuangpeng Bai

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** A use-after-free issue has been reported regarding the timer `sc timer` on the `nilfs sc info` structure. The problem is that even though it is used to wake up a sleeping log writer thread, `sc timer` is not shut down until the `nilfs sc info` structure is about to be freed, and is used regardless of the thread's lifetime. This issue is part of a bug fix series that covers three nilfs2 log writer-related issues, including a potential deadlock issue on unmount and a potential freeze issue in event synchronization. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.