CVE-2026-72199

Kernel crash via malformed resident index root

Published Aug 15, 2026 · Updated Aug 15, 2026

Improper input validation in the Linux NTFS driver before 7.1.5 allows local users to crash the kernel via a crafted filesystem. The attribute lookup path returns resident $INDEX_ROOT data without checking header alignment, lower bounds, length consistency, or minimum entry space before callers walk its entries. Exploitation requires supplying an NTFS image and causing the kernel to process its resident index root; the bounded consequence is system instability or a crash.

CVSS severity6.1
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper input validation in the Linux NTFS driver before 7.1.5 allows local users to crash the kernel via a crafted filesystem. The attribute lookup path returns resident $INDEX_ROOT data without checking header alignment, lower bounds, length consistency, or minimum entry space before callers walk its entries. Exploitation requires supplying an NTFS image and causing the kernel to process its resident index root; the bounded consequence is system instability or a crash.

The record

CVE
CVE-2026-72199
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-1288
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <7.1.5
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bfb01dd319b6b4c3e79756de7b75ccf0b9a0a247
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fcf5bf0e8570798970e3ae8c95d04765ba2c5b97

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0 <7.1.5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bfb01dd319b6b4c3e79756de7b75ccf0b9a0a247; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fcf5bf0e8570798970e3ae8c95d04765ba2c5b97

Published CVSS scores

6.1Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-1288Improper Validation of Consistency within Input

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo