CVE-2026-53023 (GCVE-0-2026-53023)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:29 – Updated: 2026-06-24 16:29
VLAI
Title
fs/ntfs3: terminate the cached volume label after UTF-8 conversion
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.
Severity
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
Linux Linux Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 32b0686369e0afbb3549a0d93e2d8517da84cd30 (git)
Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed (git)
Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 0b11fcbe80a59acdf58337d80ebb5f72201d73d6 (git)
Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 54d564b762389679e2f8fb9eeb20af7e82371e1c (git)
Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 6136bbb054f7ab9f51ae99915541633b18bcef90 (git)
Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 5cd0707b81cb4589f00aec5c4c1288bd0980d2a4 (git)
Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < a6cd43fe9b083fa23fe1595666d5738856cb261a (git)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.141 , ≤ 6.6.* (semver)
Unaffected: 6.12.91 , ≤ 6.12.* (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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Show details on NVD website

{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/super.c"
          ],
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          "vendor": "Linux",
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              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.6.141",
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              "status": "unaffected",
              "version": "6.12.91",
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              "version": "7.0.10",
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              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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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\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"
        },
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          "url": "https://git.kernel.org/stable/c/bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed"
        },
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        },
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        {
          "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": {
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    "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",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-53023",
      "date": "2026-07-02",
      "epss": "0.00172",
      "percentile": "0.06894"
    },
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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