CVE-2026-23447 (GCVE-0-2026-23447)
Vulnerability from cvelistv5
Published
2026-04-03 15:15
Modified
2026-09-14 11:58
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check The same bounds-check bug fixed for NDP16 in the previous patch also exists in cdc_ncm_rx_verify_ndp32(). The DPE array size is validated against the total skb length without accounting for ndpoffset, allowing out-of-bounds reads when the NDP32 is placed near the end of the NTB. Add ndpoffset to the nframes bounds check and use struct_size_t() to express the NDP-plus-DPE-array size more clearly. Compile-tested only.
References
Impacted products
Vendor Product Version
Linux Linux Version: 0fa81b304a7973a499f844176ca031109487dd31
Version: 0fa81b304a7973a499f844176ca031109487dd31
Version: 0fa81b304a7973a499f844176ca031109487dd31
Version: 0fa81b304a7973a499f844176ca031109487dd31
Version: 0fa81b304a7973a499f844176ca031109487dd31
Version: 0fa81b304a7973a499f844176ca031109487dd31
Version: 8cf7db86a8984ffa3a3388a8df12bc0aa4c79bd7
Version: 4ca8b8855264cf1439cdab3da7049bd1e3c2a9e6
Version: a270ca35a9499b58366d696d3290eaa4697a42db
Version: 4.14.317   ≤
Version: 4.19.285   ≤
Version: 5.4.245   ≤
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{
  "containers": {
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          "programFiles": [
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check\n\nThe same bounds-check bug fixed for NDP16 in the previous patch also\nexists in cdc_ncm_rx_verify_ndp32(). The DPE array size is validated\nagainst the total skb length without accounting for ndpoffset, allowing\nout-of-bounds reads when the NDP32 is placed near the end of the NTB.\n\nAdd ndpoffset to the nframes bounds check and use struct_size_t() to\nexpress the NDP-plus-DPE-array size more clearly.\n\nCompile-tested only."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T11:58:13.940Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/baf246d6680befde2086b1df9eb3aaba3fb6853f"
        },
        {
          "url": "https://git.kernel.org/stable/c/125f932a76a97904ef8a555f1dd53e5d0e288c54"
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          "url": "https://git.kernel.org/stable/c/af0d1613d6751489dbf9f69aac1123f0b1e566e5"
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          "url": "https://git.kernel.org/stable/c/a5bd5a2710310c965ea4153cba4210988a3454e2"
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        {
          "url": "https://git.kernel.org/stable/c/de70da1fb1d152e981ecb3157f7ec2b633005c16"
        },
        {
          "url": "https://git.kernel.org/stable/c/77914255155e68a20aa41175edeecf8121dac391"
        }
      ],
      "title": "net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23447",
    "datePublished": "2026-04-03T15:15:30.495Z",
    "dateReserved": "2026-01-13T15:37:46.019Z",
    "dateUpdated": "2026-09-14T11:58:13.940Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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