CVE-2026-72192Network attack vector

Kernel heap corruption via unchecked index promotion

Published Aug 15, 2026 · Updated Aug 15, 2026

Out-of-bounds writing in the ntfs3 index code in affected Linux kernels allows attackers to corrupt kernel heap memory via a crafted NTFS image. indx_insert_into_root sums on-disk resident entry sizes without bounding to_move to the new INDEX_BUFFER capacity before hdr_insert_head copies them. Triggering requires a mounted crafted NTFS image and a create in a full resident directory; the result is bounded adjacent-heap corruption, with victim-object control dependent on slab layout.

CVSS severity9.8
Critical
EPSS probability0.73%
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 writing in the ntfs3 index code in affected Linux kernels allows attackers to corrupt kernel heap memory via a crafted NTFS image. indx_insert_into_root sums on-disk resident entry sizes without bounding to_move to the new INDEX_BUFFER capacity before hdr_insert_head copies them. Triggering requires a mounted crafted NTFS image and a create in a full resident directory; the result is bounded adjacent-heap corruption, with victim-object control dependent on slab layout.

The record

CVE
CVE-2026-72192
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-120, T1068
Attack vector
network
Privileges
unauthenticated

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

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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=5.15
  2. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <0af83b8155cc848e9f5d2c36e20a70d024214649
  3. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <194b00c99ba971fa7cf6acd747a36032c6de54eb
  4. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <53c5f3b2da3774b41534728aba295c098c9efa19
  5. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <9b6926ac9c970ae0b2c2fe6289b16e9aa10b6a67
  6. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <aaa1f956c0fc41089a4a534da7df91552a08a47c
  7. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <cb3161deebcaf8d36d3115abf452c633f2180fc1
  8. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <d240f5f9d036b8180224954d9873f172b6be4dd8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <0af83b8155cc848e9f5d2c36e20a70d024214649; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <194b00c99ba971fa7cf6acd747a36032c6de54eb; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <53c5f3b2da3774b41534728aba295c098c9efa19; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <9b6926ac9c970ae0b2c2fe6289b16e9aa10b6a67; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <aaa1f956c0fc41089a4a534da7df91552a08a47c; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <cb3161deebcaf8d36d3115abf452c633f2180fc1; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <d240f5f9d036b8180224954d9873f172b6be4dd8

Published CVSS scores

9.8UbuntuCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
9.8Linux CNACVSS:3.1/AV:N/AC:L/PR:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1068Exploitation for Privilege Escalation

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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