CVE-2022-50442

Out-of-bounds access via unchecked index buffer length

Published Oct 1, 2025 · Updated Oct 1, 2025

Out-of-bounds access in Linux kernel ntfs3 allows local users to crash the kernel through a crafted NTFS index buffer. indx_read accepts an INDEX_BUFFER length without validating that it fits the allocated buffer, allowing hdr_find_e to read beyond the slab allocation. Reachability requires the ntfs3 driver to process a malformed volume during directory lookup; the demonstrated consequence is a kernel fault and service interruption.

CVSS severity5.5
Medium
EPSS probability0.17%
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 crash the kernel through a crafted NTFS index buffer. indx_read accepts an INDEX_BUFFER length without validating that it fits the allocated buffer, allowing hdr_find_e to read beyond the slab allocation. Reachability requires the ntfs3 driver to process a malformed volume during directory lookup; the demonstrated consequence is a kernel fault and service interruption.

The record

CVE
CVE-2022-50442
Published
Oct 1, 2025
Updated
Oct 1, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

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

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3cd9e5b41b83bb57ac3cf9888f9fef2a6ef8ed96
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3f6f75e8863f41c8b3dbfd9d99e3963aaca42601
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4d42ecda239cc13738d6fd84d098a32e67b368b9
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b15374365c9d10445ea7d66cdf885457a0223fc2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3cd9e5b41b83bb57ac3cf9888f9fef2a6ef8ed96; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3f6f75e8863f41c8b3dbfd9d99e3963aaca42601; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4d42ecda239cc13738d6fd84d098a32e67b368b9; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b15374365c9d10445ea7d66cdf885457a0223fc2

Published CVSS scores

5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

T1499Endpoint Denial of Service

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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