Xfstests

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** A use-after-free condition exists in the f2fs component of the Linux kernel. The issue occurs in the `f2fs write end io()` function when `sbi->nr pages[F2FS WB CP DATA]` is decremented to zero. This can lead to a NULL pointer dereference in the `f2fs in warm node list()` function because `f2fs put super()` may set `sbi->node inode` to NULL concurrently. This race condition results in a system panic when the kernel attempts to check if a folio belongs to the node inode. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.