Description
In the Linux kernel, the following vulnerability has been resolved: ocfs2: prevent release journal inode after journal shutdown Before calling ocfs2_delete_osb(), ocfs2_journal_shutdown() has already been executed in ocfs2_dismount_volume(), so osb->journal must be NULL. Therefore, the following calltrace will inevitably fail when it reaches jbd2_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 above execution path.
Affected products
linux: linux kernel; debian: debian linux
References7
- git.kernel.org/stable/c/42c415c53ad2065088cc411d08925effa5b3d255 Patch
- git.kernel.org/stable/c/85e66331b60601d903cceaf8c10a234db863cd78 Patch
- git.kernel.org/stable/c/e9188f66e94955431ddbe2cd1cdf8ff2bb486abf Patch
- git.kernel.org/stable/c/f46e8ef8bb7b452584f2e75337b619ac51a7cadf Patch
- git.kernel.org/stable/c/f4a917e6cd6c798f7adf39907f117fc754db1283 Patch
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html Mailing ListThird Party Advisory
- cert-portal.siemens.com/productcert/html/ssa-032379.html
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 7 · as of 8 November 2026
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