Vulnerability-Lookup

CVE-2025-68728 (GCVE-0-2025-68728)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:33 – Updated: 2026-05-11 21:52

Title

ntfs3: fix uninit memory after failed mi_read in mi_format_new

Summary

In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix uninit memory after failed mi_read in mi_format_new Fix a KMSAN un-init bug found by syzkaller. ntfs_get_bh() expects a buffer from sb_getblk(), that buffer may not be uptodate. We do not bring the buffer uptodate before setting it as uptodate. If the buffer were to not be uptodate, it could mean adding a buffer with un-init data to the mi record. Attempting to load that record will trigger KMSAN. Avoid this by setting the buffer as uptodate, if it’s not already, by overwriting it.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/afb144bc8e920db43…
https://git.kernel.org/stable/c/c70b3abfd530c7f57…
https://git.kernel.org/stable/c/8bf729b96303bb862…
https://git.kernel.org/stable/c/7ce8f2028dfccb216…
https://git.kernel.org/stable/c/46f2a881e5a7311d4…
https://git.kernel.org/stable/c/81ffe9a265df3e415…
https://git.kernel.org/stable/c/73e6b9dacf72a1e7a…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < afb144bc8e920db43a23e996eb0a6f9bdea84341 (git) Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < c70b3abfd530c7f574bc25a5f84707e6fdf0def8 (git) Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 8bf729b96303bb862d7c6dc05edcf51274ae04cf (git) Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 7ce8f2028dfccb2161b905cf8ab85cdd9e93909c (git) Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 46f2a881e5a7311d41551edb3915e4d4e8802341 (git) Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 81ffe9a265df3e41534726b852ab08792e3d374d (git) Affected: 4342306f0f0d5ff4315a204d315c1b51b914fca5 , < 73e6b9dacf72a1e7a4265eacca46f8f33e0997d6 (git)	guessed
Linux	Linux	Affected: 5.15 Unaffected: 0 , < 5.15 (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.63 , ≤ 6.12.* (semver) Unaffected: 6.17.13 , ≤ 6.17.* (semver) Unaffected: 6.18.2 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)	guessed

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          "programFiles": [
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              "version": "5.15.198",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.12.63",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
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              "version": "6.19",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs3: fix uninit memory after failed mi_read in mi_format_new\n\nFix a KMSAN un-init bug found by syzkaller.\n\nntfs_get_bh() expects a buffer from sb_getblk(), that buffer may not be\nuptodate. We do not bring the buffer uptodate before setting it as\nuptodate. If the buffer were to not be uptodate, it could mean adding a\nbuffer with un-init data to the mi record. Attempting to load that record\nwill trigger KMSAN.\n\nAvoid this by setting the buffer as uptodate, if it\u2019s not already, by\noverwriting it."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:52:11.623Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/afb144bc8e920db43a23e996eb0a6f9bdea84341"
        },
        {
          "url": "https://git.kernel.org/stable/c/c70b3abfd530c7f574bc25a5f84707e6fdf0def8"
        },
        {
          "url": "https://git.kernel.org/stable/c/8bf729b96303bb862d7c6dc05edcf51274ae04cf"
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/73e6b9dacf72a1e7a4265eacca46f8f33e0997d6"
        }
      ],
      "title": "ntfs3: fix uninit memory after failed mi_read in mi_format_new",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68728",
    "datePublished": "2025-12-24T10:33:11.847Z",
    "dateReserved": "2025-12-24T10:30:51.028Z",
    "dateUpdated": "2026-05-11T21:52:11.623Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-68728",
      "date": "2026-09-17",
      "epss": "0.00189",
      "percentile": "0.08771"
    },
    "microsoft_vex": {
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      "cve": "CVE-2025-68728",
      "id": "msrc_CVE-2025-68728",
      "initial_release_date": "2025-12-02T00:00:00.000Z",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ntfs3: fix uninit memory after failed mi_read in mi_format_new",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-68728.json",
      "version": "4"
    },
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:37:21+00:00",
      "cve": "CVE-2025-68728",
      "id": "CVE-2025-68728",
      "initial_release_date": "2025-12-24T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ntfs3: fix uninit memory after failed mi_read in mi_format_new",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68728.json",
      "version": "3"
    }
  }
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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CVE-2025-68728 (GCVE-0-2025-68728)

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Sightings

Nomenclature

Related by attack behaviour