CVE-2022-50336

Kernel crash via malformed NTFS metadata

Published Sep 15, 2025 · Updated Sep 15, 2025

NULL pointer dereference in Linux kernel NTFS3 allows local users to crash the kernel by mounting a malformed NTFS image. attr_load_runs_vcn passes a null ntfs_inode pointer to ni_find_attr when metadata is read before the Master File Table inode is available. The fault requires an NTFS3-enabled kernel to process attacker-controlled filesystem metadata; the documented consequence is a kernel oops.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux kernel NTFS3 allows local users to crash the kernel by mounting a malformed NTFS image. attr_load_runs_vcn passes a null ntfs_inode pointer to ni_find_attr when metadata is read before the Master File Table inode is available. The fault requires an NTFS3-enabled kernel to process attacker-controlled filesystem metadata; the documented consequence is a kernel oops.

The record

CVE
CVE-2022-50336
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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?

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

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1621734cd3047f7979da1d7d5c5444d583d8b0ed
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <26425414bfe5d302413b956ab2469176d4ff53aa
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2681631c29739509eec59cc0b34e977bb04c6cf1
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ea6b3598406c58c5d09b6f4328e09616c077597f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1621734cd3047f7979da1d7d5c5444d583d8b0ed; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <26425414bfe5d302413b956ab2469176d4ff53aa; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2681631c29739509eec59cc0b34e977bb04c6cf1; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ea6b3598406c58c5d09b6f4328e09616c077597f

Published CVSS scores

6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5UbuntuCVSS: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 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-476NULL Pointer Dereference
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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