Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com
☎ 03 60 47 09 81 - info@securiteinfo.com
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.
No PoCs from references.
- https://github.com/w4zu/Debian_security