CVE-2026-99101 (GCVE-0-2026-99101)
Vulnerability from cvelistv5
Published
2026-10-28 10:34
Modified
2026-10-28 10:34
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ntfs: move attribute payload before shrinking its record ntfs_new_attr_flags() resizes the non-resident attribute record before moving its name and mapping pairs to their shorter-header offsets when compression or sparse state is cleared. Shrinking the record first moves the following attribute over the tail of the old record. The subsequent memmove() therefore copies bytes from that following attribute instead of the old mapping pairs. Re-enabling compression on an empty file persists those bytes as a malformed mapping pairs array, which ntfsck reports as a missing or invalid run length. Move the payload before shrinking the record, while retaining the existing resize-before-move ordering when growing it.
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 0   ≤
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{
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          "product": "Linux",
          "programFiles": [
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              "status": "unaffected",
              "version": "7.3",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: move attribute payload before shrinking its record\n\nntfs_new_attr_flags() resizes the non-resident attribute record before\nmoving its name and mapping pairs to their shorter-header offsets when\ncompression or sparse state is cleared.\n\nShrinking the record first moves the following attribute over the tail of\nthe old record. The subsequent memmove() therefore copies bytes from that\nfollowing attribute instead of the old mapping pairs. Re-enabling\ncompression on an empty file persists those bytes as a malformed mapping\npairs array, which ntfsck reports as a missing or invalid run length.\n\nMove the payload before shrinking the record, while retaining the existing\nresize-before-move ordering when growing it."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T10:34:16.583Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7dc2c524608039d1b082a0087f7aa0751edd4ffb"
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        {
          "url": "https://git.kernel.org/stable/c/0ab6dc1ac4601c8d79e5448a024daed6b0c5ef64"
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      ],
      "title": "ntfs: move attribute payload before shrinking its record",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-99101",
    "datePublished": "2026-10-28T10:34:16.583Z",
    "dateReserved": "2026-09-25T10:25:14.391Z",
    "dateUpdated": "2026-10-28T10:34:16.583Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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