fkie_cve-2025-39842
Vulnerability from fkie_nvd
Published
2025-09-19 16:15
Modified
2025-09-22 21:23
Severity ?
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/42c415c53ad2065088cc411d08925effa5b3d255
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/85e66331b60601d903cceaf8c10a234db863cd78
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e9188f66e94955431ddbe2cd1cdf8ff2bb486abf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f46e8ef8bb7b452584f2e75337b619ac51a7cadf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f4a917e6cd6c798f7adf39907f117fc754db1283
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: prevent release journal inode after journal shutdown\n\nBefore calling ocfs2_delete_osb(), ocfs2_journal_shutdown() has already\nbeen executed in ocfs2_dismount_volume(), so osb-\u003ejournal must be NULL. \nTherefore, the following calltrace will inevitably fail when it reaches\njbd2_journal_release_jbd_inode().\n\nocfs2_dismount_volume()-\u003e\n  ocfs2_delete_osb()-\u003e\n    ocfs2_free_slot_info()-\u003e\n      __ocfs2_free_slot_info()-\u003e\n        evict()-\u003e\n          ocfs2_evict_inode()-\u003e\n            ocfs2_clear_inode()-\u003e\n\t      jbd2_journal_release_jbd_inode(osb-\u003ejournal-\u003ej_journal,\n\nAdding osb-\u003ejournal checks will prevent null-ptr-deref during the above\nexecution path."
    }
  ],
  "id": "CVE-2025-39842",
  "lastModified": "2025-09-22T21:23:01.543",
  "metrics": {},
  "published": "2025-09-19T16:15:42.930",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/42c415c53ad2065088cc411d08925effa5b3d255"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/85e66331b60601d903cceaf8c10a234db863cd78"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e9188f66e94955431ddbe2cd1cdf8ff2bb486abf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f46e8ef8bb7b452584f2e75337b619ac51a7cadf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f4a917e6cd6c798f7adf39907f117fc754db1283"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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