Vulnerability-Lookup

GHSA-FW3C-7WWH-RHHF

Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-06-24 18:32

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53023"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:13Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-fw3c-7wwh-rhhf",
  "modified": "2026-06-24T18:32:44Z",
  "published": "2026-06-24T18:32:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53023"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b11fcbe80a59acdf58337d80ebb5f72201d73d6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/32b0686369e0afbb3549a0d93e2d8517da84cd30"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54d564b762389679e2f8fb9eeb20af7e82371e1c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5cd0707b81cb4589f00aec5c4c1288bd0980d2a4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6136bbb054f7ab9f51ae99915541633b18bcef90"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6cd43fe9b083fa23fe1595666d5738856cb261a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-06-24 16:29 – Updated: 2026-06-24 16:29

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

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/32b0686369e0afbb3…
https://git.kernel.org/stable/c/bc7a0c34c4ca259cf…
https://git.kernel.org/stable/c/0b11fcbe80a59acdf…
https://git.kernel.org/stable/c/54d564b762389679e…
https://git.kernel.org/stable/c/6136bbb054f7ab9f5…
https://git.kernel.org/stable/c/5cd0707b81cb4589f…
https://git.kernel.org/stable/c/a6cd43fe9b083fa23…

Impacted products

2 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)
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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              "versionType": "semver"
            },
            {
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-24T16:29:32.440Z",
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        {
          "url": "https://git.kernel.org/stable/c/a6cd43fe9b083fa23fe1595666d5738856cb261a"
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    "datePublished": "2026-06-24T16:29:32.440Z",
    "dateReserved": "2026-06-09T07:44:35.379Z",
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    "state": "PUBLISHED"
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}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-FW3C-7WWH-RHHF

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

Tags

Sightings

Nomenclature