CVE-2026-80673Hinoki check available

Out-of-bounds read via malformed NTFS attribute

Published Aug 28, 2026 · Updated Aug 28, 2026

Out-of-bounds read in the NTFS driver in Linux 7.1 allows attackers to trigger invalid kernel memory reads via a crafted NTFS image. ntfs_external_attr_find() dereferences the next attribute-list entry's lowest_vcn and name after checks that do not validate the full fixed header, alignment, or name bounds. Exploitation requires the crafted filesystem to be mounted and its inode read; the disclosed consequence is a slab read beyond the attribute-list buffer.

CVSS severityUnavailable
Unscored
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Out-of-bounds read in the NTFS driver in Linux 7.1 allows attackers to trigger invalid kernel memory reads via a crafted NTFS image. ntfs_external_attr_find() dereferences the next attribute-list entry's lowest_vcn and name after checks that do not validate the full fixed header, alignment, or name bounds. Exploitation requires the crafted filesystem to be mounted and its inode read; the disclosed consequence is a slab read beyond the attribute-list buffer.

The record

CVE
CVE-2026-80673
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 <344b18f389f9934d59c7b0cf3d20541ea2e0da58
  2. Affected versionversion=1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 <44885c9b45eb4082fb7f558590d84bb254a08e94
  3. Affected versionversion=7.1

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 <344b18f389f9934d59c7b0cf3d20541ea2e0da58; version=1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 <44885c9b45eb4082fb7f558590d84bb254a08e94; version=7.1

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

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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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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Technologies

Your stack

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Your stack

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