CVE-2024-50247

Local kernel corruption via oversized NTFS decompression

Published Nov 9, 2024 · Updated Aug 5, 2026

Out-of-bounds access in Linux kernel NTFS3 allows local users to corrupt kernel state by processing a malformed compressed NTFS chunk. The decompress_chunk function can advance output beyond LZNT_CHUNK_SIZE and then increment an index past s_max_off without rejecting the oversized result. Exploitation requires the malformed chunk to reach NTFS3 locally and can alter kernel state or interrupt the host.

CVSS severity7.1
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

Out-of-bounds access in Linux kernel NTFS3 allows local users to corrupt kernel state by processing a malformed compressed NTFS chunk. The decompress_chunk function can advance output beyond LZNT_CHUNK_SIZE and then increment an index past s_max_off without rejecting the oversized result. Exploitation requires the malformed chunk to reach NTFS3 locally and can alter kernel state or interrupt the host.

The record

CVE
CVE-2024-50247
Published
Nov 9, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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 <1b6bc5f7212181093b6c5310eea216fc09c721a9
  2. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <4a4727bc582832f354e0d3d49838a401a28ae25e
  3. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <5f21e3e60982cd7353998b4f59f052134fd47d64
  4. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <9931122d04c6d431b2c11b5bb7b10f28584067f0
  5. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <e5ae7859008688626b4d2fa6139eeaa08e255053
  6. Affected versionversion=5.15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <1b6bc5f7212181093b6c5310eea216fc09c721a9; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <4a4727bc582832f354e0d3d49838a401a28ae25e; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <5f21e3e60982cd7353998b4f59f052134fd47d64; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <9931122d04c6d431b2c11b5bb7b10f28584067f0; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <e5ae7859008688626b4d2fa6139eeaa08e255053; version=5.15

Published CVSS scores

7.1NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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