CVE-2026-72161 (GCVE-0-2026-72161)
Vulnerability from cvelistv5
Published
2026-08-15 05:53
Modified
2026-08-17 05:09
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01
Version: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01
Version: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01
Version: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01
Version: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01
Version: da5e7c87827e8caa6a1eeec6d95dcf74ab592a01
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{
  "containers": {
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ocfs2/journal.h"
          ],
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.97",
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "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"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/24daf13422e8328fd588c34a017bdef1949910e8"
        },
        {
          "url": "https://git.kernel.org/stable/c/7da7e4ac21895fe34cceffcfc99497cc2750da99"
        },
        {
          "url": "https://git.kernel.org/stable/c/eb6a13834c23e291f1170cb1b489ec255edfa5a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/499714de42ab4d2e778cbb10186684142a1222eb"
        },
        {
          "url": "https://git.kernel.org/stable/c/63921f790234b221e4b15c56c72888b13250f81d"
        },
        {
          "url": "https://git.kernel.org/stable/c/a291c77c034b7a81849ce9b71cc9ecda9e587d89"
        }
      ],
      "title": "ocfs2: add journal NULL check in ocfs2_checkpoint_inode()",
      "x_generator": {
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      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "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"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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