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GHSA-5Q4F-HQWH-Q345

Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31

Details

In the Linux kernel, the following vulnerability has been resolved:

ntfs: fix kmap_local leak in write_mft_record_nolock() error paths

write_mft_record_nolock() maps the MFT record folio with kmap_local_folio(), but the pre_write_mst_fixup() and bio_add_folio() failure paths jump to the error label without unmapping it. kmap_local mappings are stack-ordered per task, so leaking one corrupts the nesting for any outer mapping.

Unmap the folio on those error paths too.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98140"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:45Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fix kmap_local leak in write_mft_record_nolock() error paths\n\nwrite_mft_record_nolock() maps the MFT record folio with\nkmap_local_folio(), but the pre_write_mst_fixup() and\nbio_add_folio() failure paths jump to the error label without\nunmapping it. kmap_local mappings are stack-ordered per task, so\nleaking one corrupts the nesting for any outer mapping.\n\nUnmap the folio on those error paths too.",
  "id": "GHSA-5q4f-hqwh-q345",
  "modified": "2026-09-25T12:31:38Z",
  "published": "2026-09-25T12:31:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98140"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf06dcd572845723821b54a608fc2da995c3c8e2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98140 (GCVE-0-2026-98140)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:36 – Updated: 2026-09-25 10:36

Title

ntfs: fix kmap_local leak in write_mft_record_nolock() error paths

Summary

In the Linux kernel, the following vulnerability has been resolved: ntfs: fix kmap_local leak in write_mft_record_nolock() error paths write_mft_record_nolock() maps the MFT record folio with kmap_local_folio(), but the pre_write_mst_fixup() and bio_add_folio() failure paths jump to the error label without unmapping it. kmap_local mappings are stack-ordered per task, so leaking one corrupts the nesting for any outer mapping. Unmap the folio on those error paths too.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/5d7f7bf8fba8cf563…
https://git.kernel.org/stable/c/cf06dcd5728457238…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 115380f9a2f9675c7924563cbba70d40cae8fb81 , < 5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480c (git) Affected: 115380f9a2f9675c7924563cbba70d40cae8fb81 , < cf06dcd572845723821b54a608fc2da995c3c8e2 (git)
Linux	Linux	Affected: 7.1 Unaffected: 0 , < 7.1 (semver) Unaffected: 7.2.7 , ≤ 7.2.* (semver) Unaffected: 7.3-rc2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs/mft.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480c",
              "status": "affected",
              "version": "115380f9a2f9675c7924563cbba70d40cae8fb81",
              "versionType": "git"
            },
            {
              "lessThan": "cf06dcd572845723821b54a608fc2da995c3c8e2",
              "status": "affected",
              "version": "115380f9a2f9675c7924563cbba70d40cae8fb81",
              "versionType": "git"
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        },
        {
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          "product": "Linux",
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          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "lessThan": "7.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
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          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.7",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fix kmap_local leak in write_mft_record_nolock() error paths\n\nwrite_mft_record_nolock() maps the MFT record folio with\nkmap_local_folio(), but the pre_write_mst_fixup() and\nbio_add_folio() failure paths jump to the error label without\nunmapping it. kmap_local mappings are stack-ordered per task, so\nleaking one corrupts the nesting for any outer mapping.\n\nUnmap the folio on those error paths too."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:36:16.580Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480c"
        },
        {
          "url": "https://git.kernel.org/stable/c/cf06dcd572845723821b54a608fc2da995c3c8e2"
        }
      ],
      "title": "ntfs: fix kmap_local leak in write_mft_record_nolock() error paths",
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        "engine": "bippy-1.2.0"
      }
    }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98140",
    "datePublished": "2026-09-25T10:36:16.580Z",
    "dateReserved": "2026-09-25T10:25:14.319Z",
    "dateUpdated": "2026-09-25T10:36:16.580Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

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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.

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GHSA-5Q4F-HQWH-Q345

CVE-2026-98140 (GCVE-0-2026-98140)

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