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

Vulnerability from cvelistv5 – Published: 2025-12-24 10:33 – Updated: 2026-05-11 21:52
VLAI
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 CNA under the mitre root
CNA scorecard D 53/100 over 6666 records in the last 180 days details
References
Impacted 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 Create a notification for this product.
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 Create a notification for this product.
Show details on NVD website
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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"
      },
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          "url": "https://git.kernel.org/stable/c/afb144bc8e920db43a23e996eb0a6f9bdea84341"
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          "url": "https://git.kernel.org/stable/c/c70b3abfd530c7f574bc25a5f84707e6fdf0def8"
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      "title": "ntfs3: fix uninit memory after failed mi_read in mi_format_new",
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    "datePublished": "2025-12-24T10:33:11.847Z",
    "dateReserved": "2025-12-24T10:30:51.028Z",
    "dateUpdated": "2026-05-11T21:52:11.623Z",
    "state": "PUBLISHED"
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      "date": "2026-10-16",
      "epss": "0.00193",
      "percentile": "0.08414"
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      "product_status:known_affected": "1",
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      "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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            "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."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nntfs3: correcci\u00f3n de memoria no inicializada despu\u00e9s de un mi_read fallido en mi_format_new\n\nCorrige un error de no inicializaci\u00f3n de KMSAN encontrado por syzkaller.\n\nntfs_get_bh() espera un b\u00fafer de sb_getblk(), ese b\u00fafer podr\u00eda no estar actualizado. No actualizamos el b\u00fafer antes de establecerlo como actualizado. Si el b\u00fafer no estuviera actualizado, podr\u00eda significar a\u00f1adir un b\u00fafer con datos no inicializados al registro mi. Intentar cargar ese registro activar\u00e1 KMSAN.\n\nEsto se evita estableciendo el b\u00fafer como actualizado, si a\u00fan no lo est\u00e1, sobrescribi\u00e9ndolo."
          }
        ],
        "id": "CVE-2025-68728",
        "lastModified": "2026-10-13T11:10:00.203",
        "metrics": {},
        "published": "2025-12-24T11:16:02.100",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
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      "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"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-10T01:39:33Z",
      "cve": "CVE-2025-68728",
      "id": "CVE-2025-68728",
      "initial_release_date": "2025-12-25T00:23:51Z",
      "product_status:known_affected": "504",
      "product_status:known_not_affected": "388",
      "product_status:recommended": "123",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-68728",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-68728.json",
      "version": "26"
    }
  }
}



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