CVE-2026-53023 (GCVE-0-2026-53023)
Vulnerability from cvelistv5
Published
2026-06-24 16:29
Modified
2026-06-24 16:29
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: terminate the cached volume label after UTF-8 conversion ntfs_fill_super() loads the on-disk volume label with utf16s_to_utf8s() and stores the result in sbi->volume.label. The converted label is later exposed through ntfs3_label_show() using %s, but utf16s_to_utf8s() only returns the number of bytes written and does not add a trailing NUL. If the converted label fills the entire fixed buffer, ntfs3_label_show() can read past the end of sbi->volume.label while looking for a terminator. Terminate the cached label explicitly after a successful conversion and clamp the exact-full case to the last byte of the buffer.
References
Impacted products
Vendor Product Version
Linux Linux Version: 82cae269cfa953032fbb8980a7d554d60fb00b17
Version: 82cae269cfa953032fbb8980a7d554d60fb00b17
Version: 82cae269cfa953032fbb8980a7d554d60fb00b17
Version: 82cae269cfa953032fbb8980a7d554d60fb00b17
Version: 82cae269cfa953032fbb8980a7d554d60fb00b17
Version: 82cae269cfa953032fbb8980a7d554d60fb00b17
Version: 82cae269cfa953032fbb8980a7d554d60fb00b17
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/super.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "version": "7.0.10",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: terminate the cached volume label after UTF-8 conversion\n\nntfs_fill_super() loads the on-disk volume label with utf16s_to_utf8s()\nand stores the result in sbi-\u003evolume.label. The converted label is later\nexposed through ntfs3_label_show() using %s, but utf16s_to_utf8s() only\nreturns the number of bytes written and does not add a trailing NUL.\n\nIf the converted label fills the entire fixed buffer,\nntfs3_label_show() can read past the end of sbi-\u003evolume.label while\nlooking for a terminator.\n\nTerminate the cached label explicitly after a successful conversion and\nclamp the exact-full case to the last byte of the buffer."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-24T16:29:32.440Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/32b0686369e0afbb3549a0d93e2d8517da84cd30"
        },
        {
          "url": "https://git.kernel.org/stable/c/bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed"
        },
        {
          "url": "https://git.kernel.org/stable/c/0b11fcbe80a59acdf58337d80ebb5f72201d73d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/54d564b762389679e2f8fb9eeb20af7e82371e1c"
        },
        {
          "url": "https://git.kernel.org/stable/c/6136bbb054f7ab9f51ae99915541633b18bcef90"
        },
        {
          "url": "https://git.kernel.org/stable/c/5cd0707b81cb4589f00aec5c4c1288bd0980d2a4"
        },
        {
          "url": "https://git.kernel.org/stable/c/a6cd43fe9b083fa23fe1595666d5738856cb261a"
        }
      ],
      "title": "fs/ntfs3: terminate the cached volume label after UTF-8 conversion",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53023",
    "datePublished": "2026-06-24T16:29:32.440Z",
    "dateReserved": "2026-06-09T07:44:35.379Z",
    "dateUpdated": "2026-06-24T16:29:32.440Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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