CVE-2024-50242Public exploit

Lock-validation disruption via uninitialized NTFS MFT lock

Published Nov 9, 2024 · Updated May 11, 2026

Improper lock handling in Linux kernel 5.15 through 6.12-rc2 allows local users to disrupt lock validation by closing the NTFS master file table. The ntfs_file_release function acquires ni->file.run_lock for the MFT even though that lock is not explicitly initialized for the MFT inode. The path requires an NTFS volume mounted with preallocation and a last-writer close of the MFT; published evidence shows warnings and disabled lock validation, not a demonstrated privilege gain or system crash.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper lock handling in Linux kernel 5.15 through 6.12-rc2 allows local users to disrupt lock validation by closing the NTFS master file table. The ntfs_file_release function acquires ni->file.run_lock for the MFT even though that lock is not explicitly initialized for the MFT inode. The path requires an NTFS volume mounted with preallocation and a last-writer close of the MFT; published evidence shows warnings and disabled lock validation, not a demonstrated privilege gain or system crash.

The record

CVE
CVE-2024-50242
Published
Nov 9, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 9, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <031d6f608290c847ba6378322d0986d08d1a645a
  2. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <542532afe249588ae88d8409d4bf861c315f8862
  3. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <550ef40fa6366d5d11b122e5f36b1f9aa20c087e
  4. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <82685eb6ca1db2bd11190451085bcb86ed03aa24
  5. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <d1ac7e2620302e3e49573df39bd4e868e8b4962a
  6. Affected versionversion=5.15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <031d6f608290c847ba6378322d0986d08d1a645a; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <542532afe249588ae88d8409d4bf861c315f8862; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <550ef40fa6366d5d11b122e5f36b1f9aa20c087e; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <82685eb6ca1db2bd11190451085bcb86ed03aa24; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <d1ac7e2620302e3e49573df39bd4e868e8b4962a; version=5.15

Published CVSS scores

7.8NIST NVDCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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Technologies

Your stack

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Your stack

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