CVE-2026-98139 (GCVE-0-2026-98139)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:36 – Updated: 2026-09-25 10:36
VLAI
Title
ntfs: only count successfully cleared runs when freeing clusters
Summary
In the Linux kernel, the following vulnerability has been resolved: ntfs: only count successfully cleared runs when freeing clusters ntfs_cluster_free_from_rl_nolock() adds a run's length to nr_freed whenever the error bookkeeping condition is false, which includes cases where ntfs_bitmap_clear_run() actually failed - e.g. a second run failing with the same errno as an earlier one, or any failure after a non-ENOMEM error was already recorded. Since a failed ntfs_bitmap_clear_run() rolls back its partial modifications, no bits were cleared for that run, yet its length still inflates vol->free_clusters, corrupting statfs output and the allocator's free space gate. Only count runs whose bitmap clear succeeded.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 11ccc9107dc460de28af90fac1f42404d9802735 , < 7eb97d8828e7758b9c81277f7802e740a800f78a (git)
Affected: 11ccc9107dc460de28af90fac1f42404d9802735 , < be9e89ccb8e52a3e4b67feeb03ebd8133091dc7e (git)
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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": {
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          "product": "Linux",
          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: only count successfully cleared runs when freeing clusters\n\nntfs_cluster_free_from_rl_nolock() adds a run\u0027s length to nr_freed\nwhenever the error bookkeeping condition is false, which includes\ncases where ntfs_bitmap_clear_run() actually failed - e.g. a second\nrun failing with the same errno as an earlier one, or any failure\nafter a non-ENOMEM error was already recorded. Since a failed\nntfs_bitmap_clear_run() rolls back its partial modifications, no\nbits were cleared for that run, yet its length still inflates\nvol-\u003efree_clusters, corrupting statfs output and the allocator\u0027s\nfree space gate.\n\nOnly count runs whose bitmap clear succeeded."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:36:15.974Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/be9e89ccb8e52a3e4b67feeb03ebd8133091dc7e"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98139",
    "datePublished": "2026-09-25T10:36:15.974Z",
    "dateReserved": "2026-09-25T10:25:14.319Z",
    "dateUpdated": "2026-09-25T10:36:15.974Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: only count successfully cleared runs when freeing clusters\n\nntfs_cluster_free_from_rl_nolock() adds a run\u0027s length to nr_freed\nwhenever the error bookkeeping condition is false, which includes\ncases where ntfs_bitmap_clear_run() actually failed - e.g. a second\nrun failing with the same errno as an earlier one, or any failure\nafter a non-ENOMEM error was already recorded. Since a failed\nntfs_bitmap_clear_run() rolls back its partial modifications, no\nbits were cleared for that run, yet its length still inflates\nvol-\u003efree_clusters, corrupting statfs output and the allocator\u0027s\nfree space gate.\n\nOnly count runs whose bitmap clear succeeded."
          }
        ],
        "id": "CVE-2026-98139",
        "lastModified": "2026-09-25T11:17:45.383",
        "metrics": {},
        "published": "2026-09-25T11:17:45.383",
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "vulnStatus": "Received"
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    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-09-25T23:46:16Z",
      "cve": "CVE-2026-98139",
      "id": "CVE-2026-98139",
      "initial_release_date": "2026-09-25T23:46:16Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98139",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-98139.json",
      "version": "2"
    }
  }
}



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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.



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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.