CVE-2025-68728 (GCVE-0-2025-68728)
Vulnerability from cvelistv5
Published
2025-12-24 10:33
Modified
2025-12-24 10:33
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 4342306f0f0d5ff4315a204d315c1b51b914fca5
Version: 4342306f0f0d5ff4315a204d315c1b51b914fca5
Version: 4342306f0f0d5ff4315a204d315c1b51b914fca5
Version: 4342306f0f0d5ff4315a204d315c1b51b914fca5
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{
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          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/fsntfs.c"
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          "vendor": "Linux",
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              "version": "0",
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "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": "2025-12-24T10:33:11.847Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        {
          "url": "https://git.kernel.org/stable/c/73e6b9dacf72a1e7a4265eacca46f8f33e0997d6"
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      "title": "ntfs3: fix uninit memory after failed mi_read in mi_format_new",
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  "cveMetadata": {
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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": "2025-12-24T10:33:11.847Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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  "vulnerability-lookup:meta": {
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  }
}


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