CVE-2023-54063

Kernel interruption via unchecked NTFS index bounds

Published Dec 24, 2025 · Updated Dec 24, 2025

An out-of-bounds read in the Linux kernel's NTFS3 driver allows local users to interrupt kernel operation via crafted NTFS metadata. In indx_insert_into_buffer(), memmove uses a length derived from INDEX_BUFFER.index without first ensuring that index does not exceed INDEX_HDR.total. The crafted NTFS volume must already be mounted before a local user performs a directory create, rename, or similar operation that reaches the faulty copy.

CVSS severity7.8
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

An out-of-bounds read in the Linux kernel's NTFS3 driver allows local users to interrupt kernel operation via crafted NTFS metadata. In indx_insert_into_buffer(), memmove uses a length derived from INDEX_BUFFER.index without first ensuring that index does not exceed INDEX_HDR.total. The crafted NTFS volume must already be mounted before a local user performs a directory create, rename, or similar operation that reaches the faulty copy.

The record

CVE
CVE-2023-54063
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.15
  2. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <17048287ac79abd33b275ac3b5738285d406481b
  3. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <4bf3b564e27a518f158a83d5e1a50064ed6136a0
  4. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <a7e5dba10ba1402dd6c2f961a70320770865c4a5
  5. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <b8c44949044e5f7f864525fdffe8e95135ce9ce5
  6. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <cd7e1d67924081717c5c96ead758a1a77867689a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <17048287ac79abd33b275ac3b5738285d406481b; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <4bf3b564e27a518f158a83d5e1a50064ed6136a0; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <a7e5dba10ba1402dd6c2f961a70320770865c4a5; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <b8c44949044e5f7f864525fdffe8e95135ce9ce5; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <cd7e1d67924081717c5c96ead758a1a77867689a

Published CVSS scores

7.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo