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CVE-2026-72161 (GCVE-0-2026-72161)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:53 – Updated: 2026-08-17 05:09
VLAI
Title
ocfs2: add journal NULL check in ocfs2_checkpoint_inode()
Summary
In the Linux kernel, the following vulnerability has been resolved: ocfs2: add journal NULL check in ocfs2_checkpoint_inode() During unmount, ocfs2_journal_shutdown() frees the journal and sets osb->journal to NULL. Later, when VFS evicts remaining cached inodes, ocfs2_evict_inode() -> ocfs2_clear_inode() -> ocfs2_checkpoint_inode() -> ocfs2_ci_fully_checkpointed() dereferences osb->journal, causing a NULL pointer dereference. Fix this by adding a NULL check for osb->journal in ocfs2_checkpoint_inode(). If the journal is NULL, it has already been fully flushed and destroyed during shutdown, so there is nothing to checkpoint.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 , < 24daf13422e8328fd588c34a017bdef1949910e8 (git)
Affected: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 , < 7da7e4ac21895fe34cceffcfc99497cc2750da99 (git)
Affected: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 , < eb6a13834c23e291f1170cb1b489ec255edfa5a3 (git)
Affected: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 , < 499714de42ab4d2e778cbb10186684142a1222eb (git)
Affected: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 , < 63921f790234b221e4b15c56c72888b13250f81d (git)
Affected: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 , < a291c77c034b7a81849ce9b71cc9ecda9e587d89 (git)
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Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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              "operator": "OR"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: add journal NULL check in ocfs2_checkpoint_inode()\n\nDuring unmount, ocfs2_journal_shutdown() frees the journal and sets\nosb-\u003ejournal to NULL. Later, when VFS evicts remaining cached inodes,\nocfs2_evict_inode() -\u003e ocfs2_clear_inode() -\u003e ocfs2_checkpoint_inode()\n-\u003e ocfs2_ci_fully_checkpointed() dereferences osb-\u003ejournal, causing a\nNULL pointer dereference.\n\nFix this by adding a NULL check for osb-\u003ejournal in\nocfs2_checkpoint_inode(). If the journal is NULL, it has already been\nfully flushed and destroyed during shutdown, so there is nothing to\ncheckpoint."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:09:21.902Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/24daf13422e8328fd588c34a017bdef1949910e8"
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/a291c77c034b7a81849ce9b71cc9ecda9e587d89"
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    "cveId": "CVE-2026-72161",
    "datePublished": "2026-08-15T05:53:29.670Z",
    "dateReserved": "2026-08-09T03:40:39.909Z",
    "dateUpdated": "2026-08-17T05:09:21.902Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-09-04",
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-18T14:32:36+00:00",
      "cve": "CVE-2026-72161",
      "id": "CVE-2026-72161",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ocfs2: add journal NULL check in ocfs2_checkpoint_inode()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72161.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.