admin/cve
1
0
Fork 0
mirror of https://github.com/0xMarcio/cve.git synced 2025-11-28 18:48:49 +00:00
Code Issues Packages Projects Releases Wiki Activity
cve/2025/CVE-2025-39842.md
0xMarcio cb00e1339f Update CVE list 2025-09-29 21:09
2025-09-29 21:09:30 +02:00

1.3 KiB
Raw Blame History

CVE-2025-39842

Description

In the Linux kernel, the following vulnerability has been resolved:ocfs2: prevent release journal inode after journal shutdownBefore calling ocfs2_delete_osb(), ocfs2_journal_shutdown() has alreadybeen executed in ocfs2_dismount_volume(), so osb->journal must be NULL. Therefore, the following calltrace will inevitably fail when it reachesjbd2_journal_release_jbd_inode().ocfs2_dismount_volume()-> ocfs2_delete_osb()-> ocfs2_free_slot_info()-> __ocfs2_free_slot_info()-> evict()-> ocfs2_evict_inode()-> ocfs2_clear_inode()-> jbd2_journal_release_jbd_inode(osb->journal->j_journal,Adding osb->journal checks will prevent null-ptr-deref during the aboveexecution path.

POC

Reference

No PoCs from references.

Github