ocfs2: prevent release journal inode after journal shutdown

{
  "id": "14b57949013c933231a648371b1d52b60078e958df16bf561065dfb7c6df2cb3",
  "url": "https://osv.dev/vulnerability/CVE-2025-39842",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ocfs2: prevent release journal inode after journal shutdown",
    "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.",
    "evidence": "osv:CVE-2025-39842",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.151",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.105",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.46",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.16.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-39842",
      "aliases": [
        "CVE-2025-39842"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "da5e7c87827e8caa6a1eeec6d95dcf74ab592a01"
                },
                {
                  "fixed": "42c415c53ad2065088cc411d08925effa5b3d255"
                },
                {
                  "fixed": "e9188f66e94955431ddbe2cd1cdf8ff2bb486abf"
                },
                {
                  "fixed": "f4a917e6cd6c798f7adf39907f117fc754db1283"
                },
                {
                  "fixed": "85e66331b60601d903cceaf8c10a234db863cd78"
                },
                {
                  "fixed": "f46e8ef8bb7b452584f2e75337b619ac51a7cadf"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39842.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.151"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.105"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.46"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.16.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39842.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.284125104Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-032379.html",
        "https://git.kernel.org/stable/c/42c415c53ad2065088cc411d08925effa5b3d255",
        "https://git.kernel.org/stable/c/85e66331b60601d903cceaf8c10a234db863cd78",
        "https://git.kernel.org/stable/c/e9188f66e94955431ddbe2cd1cdf8ff2bb486abf",
        "https://git.kernel.org/stable/c/f46e8ef8bb7b452584f2e75337b619ac51a7cadf",
        "https://git.kernel.org/stable/c/f4a917e6cd6c798f7adf39907f117fc754db1283",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39842.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-39842",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39842.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-39842",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 492067,
  "published_at": "2025-09-19T15:26:17.075+00:00"
}