CVE-2026-98133

Extended-attribute hiding via failed setxattr state update

Published Sep 25, 2026 · Updated Sep 25, 2026

Linux 7.1 contains an NTFS extended-attribute state error that allows local users to hide existing attributes until inode eviction. In fs/ntfs/ea.c, ntfs_set_ea() unconditionally derives the HasEA flag from stale ea_info_qsize after a failed setxattr, clearing the in-memory flag while attributes remain on disk. A local user needs permission to set an attribute on an NTFS inode; the resulting attribute invisibility lasts until that inode is evicted.

CVSS severityUnavailable
Unscored
EPSS probability0.11%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Linux 7.1 contains an NTFS extended-attribute state error that allows local users to hide existing attributes until inode eviction. In fs/ntfs/ea.c, ntfs_set_ea() unconditionally derives the HasEA flag from stale ea_info_qsize after a failed setxattr, clearing the in-memory flag while attributes remain on disk. A local user needs permission to set an attribute on an NTFS inode; the resulting attribute invisibility lasts until that inode is evicted.

The record

CVE
CVE-2026-98133
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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=7.1
  2. Affected versionversion=fc053f05ca282a5e760b41f6560ac835c4e28037 <5811a08310754cbf4a1122c81d14c54b8873c35c
  3. Affected versionversion=fc053f05ca282a5e760b41f6560ac835c4e28037 <ac727d86fb84bdc9626ba9c756c26767459f3083

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=7.1; version=fc053f05ca282a5e760b41f6560ac835c4e28037 <5811a08310754cbf4a1122c81d14c54b8873c35c; version=fc053f05ca282a5e760b41f6560ac835c4e28037 <ac727d86fb84bdc9626ba9c756c26767459f3083

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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