From this webpage screenshot, we can extract the following key information about the vulnerability: 1. Vulnerability Description: - Title: - Description: In the function, we access the extent map to calculate , but after releasing the reference to the extent map, this leads to a use-after-free. The fix is to calculate before releasing the extent map reference. 2. Reporter: - Reporter: syzbot+853d80cba98ce1157ae6@syzkaller.appspotmail.com 3. Link: - Link: 4. Fix Patch: - Patch: 5. Fixed Code: - Code Diff: 6. Fixers: - Fixer: Filipe Manana - Fixer: Greg Kroah-Hartman 7. Reviewers: - Reviewer: David Sterba - Reviewer: Brennan Lamoreaux 8. Status: - Status: Fixed ( ) This information helps us understand the vulnerability's background, the fix process, and the changes made in the code after the fix.