CVE-2026-80868Hinoki check available

Task hang via misaligned ntfs3 inline data

Published Sep 4, 2026 · Updated Sep 4, 2026

Denial of service in Linux kernel 7.0 through 7.1.4 allows local users to leave writing tasks hung through buffered ntfs3 writes. The ntfs3 code allocates iomap inline_data with kmemdup, which does not guarantee page alignment, so iomap_inline_data_valid can trigger a kernel BUG. Reachability requires write access to an NTFS volume using ntfs3; the affected task can remain blocked while holding its folio and inode locks.

CVSS severityUnavailable
Unscored
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in Linux kernel 7.0 through 7.1.4 allows local users to leave writing tasks hung through buffered ntfs3 writes. The ntfs3 code allocates iomap inline_data with kmemdup, which does not guarantee page alignment, so iomap_inline_data_valid can trigger a kernel BUG. Reachability requires write access to an NTFS volume using ntfs3; the affected task can remain blocked while holding its folio and inode locks.

The record

CVE
CVE-2026-80868
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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?

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  1. Affected versionversion=099ef9ab9203dff327f2d61e44773f9acbc01f13 <3cd2212012c06d2b1fd03a6bf84f6202ab70056c
  2. Affected versionversion=099ef9ab9203dff327f2d61e44773f9acbc01f13 <70d3855594cf6e8791970714b65cac3202d6160e
  3. Affected versionversion=7.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=099ef9ab9203dff327f2d61e44773f9acbc01f13 <3cd2212012c06d2b1fd03a6bf84f6202ab70056c; version=099ef9ab9203dff327f2d61e44773f9acbc01f13 <70d3855594cf6e8791970714b65cac3202d6160e; version=7.0

Published CVSS scores

No CVSS assessment is available in this record.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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