CVE-2026-72470

Kernel crash via undersized NTFS log buffer

Published Aug 15, 2026 · Updated Aug 15, 2026

Heap buffer overflow in the ntfs3 driver in affected Linux kernels allows local users to crash the system via a crafted dirty NTFS volume. During log_replay(), the driver adopts a larger on-disk log page size but leaves one_page_buf at its host-derived allocation size, so read_log_page() writes beyond the scratch buffer. Reachability requires mounting the volume and reaching an unaligned log-page read; the bounded consequence is kernel memory corruption and a system crash.

CVSS severity6.0
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in the ntfs3 driver in affected Linux kernels allows local users to crash the system via a crafted dirty NTFS volume. During log_replay(), the driver adopts a larger on-disk log page size but leaves one_page_buf at its host-derived allocation size, so read_log_page() writes beyond the scratch buffer. Reachability requires mounting the volume and reaching an unaligned log-page read; the bounded consequence is kernel memory corruption and a system crash.

The record

CVE
CVE-2026-72470
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-131, T1499
Attack vector
local
Privileges
admin

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=b46acd6a6a627d876898e1c84d3f84902264b445 <2097a2537d9d1c29c0e20ed0dbf717a0ccd8f374
  3. Affected versionversion=b46acd6a6a627d876898e1c84d3f84902264b445 <4f129fc6f756f8541e5bff45b1804cc11b1ec712
  4. Affected versionversion=b46acd6a6a627d876898e1c84d3f84902264b445 <5a35454179fe1041d9cd286f5d320ce0d448c12a
  5. Affected versionversion=b46acd6a6a627d876898e1c84d3f84902264b445 <c99444f6dfca893f6d310aae4a53c620f98f7b4f
  6. Affected versionversion=b46acd6a6a627d876898e1c84d3f84902264b445 <f1422df595d69b997d23a8f11e12c528ccef7fad

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=b46acd6a6a627d876898e1c84d3f84902264b445 <2097a2537d9d1c29c0e20ed0dbf717a0ccd8f374; version=b46acd6a6a627d876898e1c84d3f84902264b445 <4f129fc6f756f8541e5bff45b1804cc11b1ec712; version=b46acd6a6a627d876898e1c84d3f84902264b445 <5a35454179fe1041d9cd286f5d320ce0d448c12a; version=b46acd6a6a627d876898e1c84d3f84902264b445 <c99444f6dfca893f6d310aae4a53c620f98f7b4f; version=b46acd6a6a627d876898e1c84d3f84902264b445 <f1422df595d69b997d23a8f11e12c528ccef7fad

Published CVSS scores

6.0Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-131Incorrect Calculation of Buffer Size
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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