CVE-2026-72196

System crash via unbounded NTFS log replay

Published Aug 15, 2026 · Updated Aug 15, 2026

Out-of-bounds write in the Linux kernel NTFS3 driver allows local users to crash a system by mounting a crafted NTFS image. The log_replay analysis pass validates only the first target cluster, then indexes past dp->page_lcns when lcns_follow spans beyond the allocated array. Exploitation requires local ability to mount a malicious NTFS filesystem; the demonstrated consequence is a kernel crash.

CVSS severity8.4
High
EPSS probability0.18%
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 write in the Linux kernel NTFS3 driver allows local users to crash a system by mounting a crafted NTFS image. The log_replay analysis pass validates only the first target cluster, then indexes past dp->page_lcns when lcns_follow spans beyond the allocated array. Exploitation requires local ability to mount a malicious NTFS filesystem; the demonstrated consequence is a kernel crash.

The record

CVE
CVE-2026-72196
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787
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=5.15
  2. Affected versionversion=b46acd6a6a627d876898e1c84d3f84902264b445 <0f13e823bf86bd1800168ea0bb5bca8b8500a81c
  3. Affected versionversion=b46acd6a6a627d876898e1c84d3f84902264b445 <49c86dae0c0ccb8d98ddcdc46987259389c816dd
  4. Affected versionversion=b46acd6a6a627d876898e1c84d3f84902264b445 <5e7b598660cfa8e5af172cf4c65cffc126333307
  5. Affected versionversion=b46acd6a6a627d876898e1c84d3f84902264b445 <9b3d8cc9d54fcded4de51b2b1026ae7182512077
  6. Affected versionversion=b46acd6a6a627d876898e1c84d3f84902264b445 <9b7c28d8c61bdb041936222a09a708531a1c2921
  7. Affected versionversion=b46acd6a6a627d876898e1c84d3f84902264b445 <d240cd98f5f7b65c90f6b2b6abe3232ccdc405ab

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=b46acd6a6a627d876898e1c84d3f84902264b445 <0f13e823bf86bd1800168ea0bb5bca8b8500a81c; version=b46acd6a6a627d876898e1c84d3f84902264b445 <49c86dae0c0ccb8d98ddcdc46987259389c816dd; version=b46acd6a6a627d876898e1c84d3f84902264b445 <5e7b598660cfa8e5af172cf4c65cffc126333307; version=b46acd6a6a627d876898e1c84d3f84902264b445 <9b3d8cc9d54fcded4de51b2b1026ae7182512077; version=b46acd6a6a627d876898e1c84d3f84902264b445 <9b7c28d8c61bdb041936222a09a708531a1c2921; version=b46acd6a6a627d876898e1c84d3f84902264b445 <d240cd98f5f7b65c90f6b2b6abe3232ccdc405ab

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
8.4CVE.orgCVSS:3.1/AV:L/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 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-787Out-of-bounds Write

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

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