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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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
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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        }
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-26T19:40:14+00:00",
      "cve": "CVE-2026-53023",
      "id": "CVE-2026-53023",
      "initial_release_date": "2026-06-24T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fs/ntfs3: terminate the cached volume label after UTF-8 conversion",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53023.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-06-26T02:13:15Z",
      "cve": "CVE-2026-53023",
      "id": "CVE-2026-53023",
      "initial_release_date": "2026-06-26T02:13:15Z",
      "product_status:known_affected": "112",
      "product_status:known_not_affected": "179",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-53023",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53023.json",
      "version": "2"
    }
  }
}



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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.

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  • 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.


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