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FKIE_CVE-2026-72161

Vulnerability from fkie_nvd - Published: 2026-08-15 06:21 - Updated: 2026-08-17 06:18
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24daf13422e8328fd588c34a017bdef1949910e8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/499714de42ab4d2e778cbb10186684142a1222eb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/63921f790234b221e4b15c56c72888b13250f81d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7da7e4ac21895fe34cceffcfc99497cc2750da99
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a291c77c034b7a81849ce9b71cc9ecda9e587d89
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb6a13834c23e291f1170cb1b489ec255edfa5a3
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ocfs2/journal.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "24daf13422e8328fd588c34a017bdef1949910e8",
              "status": "affected",
              "version": "da5e7c87827e8caa6a1eeec6d95dcf74ab592a01",
              "versionType": "git"
            },
            {
              "lessThan": "7da7e4ac21895fe34cceffcfc99497cc2750da99",
              "status": "affected",
              "version": "da5e7c87827e8caa6a1eeec6d95dcf74ab592a01",
              "versionType": "git"
            },
            {
              "lessThan": "eb6a13834c23e291f1170cb1b489ec255edfa5a3",
              "status": "affected",
              "version": "da5e7c87827e8caa6a1eeec6d95dcf74ab592a01",
              "versionType": "git"
            },
            {
              "lessThan": "499714de42ab4d2e778cbb10186684142a1222eb",
              "status": "affected",
              "version": "da5e7c87827e8caa6a1eeec6d95dcf74ab592a01",
              "versionType": "git"
            },
            {
              "lessThan": "63921f790234b221e4b15c56c72888b13250f81d",
              "status": "affected",
              "version": "da5e7c87827e8caa6a1eeec6d95dcf74ab592a01",
              "versionType": "git"
            },
            {
              "lessThan": "a291c77c034b7a81849ce9b71cc9ecda9e587d89",
              "status": "affected",
              "version": "da5e7c87827e8caa6a1eeec6d95dcf74ab592a01",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ocfs2/journal.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "lessThan": "5.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-72161",
  "lastModified": "2026-08-17T06:18:16.387",
  "metrics": {},
  "published": "2026-08-15T06:21:33.983",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/24daf13422e8328fd588c34a017bdef1949910e8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/499714de42ab4d2e778cbb10186684142a1222eb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/63921f790234b221e4b15c56c72888b13250f81d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7da7e4ac21895fe34cceffcfc99497cc2750da99"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a291c77c034b7a81849ce9b71cc9ecda9e587d89"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/eb6a13834c23e291f1170cb1b489ec255edfa5a3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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