CVE-2022-50507

Kernel compromise via unchecked NTFS data-run offset

Published Oct 4, 2025 · Updated Oct 4, 2025

Use-after-free in the Linux kernel ntfs3 driver allows attackers to crash or corrupt the kernel when a crafted NTFS image is mounted. Callers of run_unpack trusted an MFT attribute's data-run offset without checking that it fell within the attribute, enabling reads from freed or adjacent memory. A user or automounter must mount the attacker-supplied volume; the corruption can expose kernel data, alter kernel state, or panic the host.

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

What happened

Use-after-free in the Linux kernel ntfs3 driver allows attackers to crash or corrupt the kernel when a crafted NTFS image is mounted. Callers of run_unpack trusted an MFT attribute's data-run offset without checking that it fell within the attribute, enabling reads from freed or adjacent memory. A user or automounter must mount the attacker-supplied volume; the corruption can expose kernel data, alter kernel state, or panic the host.

The record

CVE
CVE-2022-50507
Published
Oct 4, 2025
Updated
Oct 4, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 4, 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 <6db620863f8528ed9a9aa5ad323b26554a17881d
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9173b89c16a603d73c434b695fe2a7a13491300f
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <de5e0955248ff90a2ae91e7f5c108392b52152d0
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e0455361d3068066a91fe18282b751925d7b5ee7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6db620863f8528ed9a9aa5ad323b26554a17881d; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9173b89c16a603d73c434b695fe2a7a13491300f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <de5e0955248ff90a2ae91e7f5c108392b52152d0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e0455361d3068066a91fe18282b751925d7b5ee7

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1203Exploitation for Client Execution

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

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Your stack

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