CVE-2026-93076Hinoki check available

Unspecified impact via stale DAX page-map state

Published Sep 17, 2026 · Updated Sep 17, 2026

Improper initialization in Linux 7.1 DAX fsdev allows attackers to cause unspecified impact via static-device rebinding. In drivers/dax/fsdev.c, rebinding from device_dax to fsdev_dax retains pgmap->vmemmap_shift before devm_memremap_pages(), producing a mapping incompatible with required order-0 folios. The condition requires a previously bound static DAX device; Amazon Linux assesses privileged local access, while upstream records do not specify a concrete failure outcome.

CVSS severity4.7
Medium
EPSS probability0.20%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper initialization in Linux 7.1 DAX fsdev allows attackers to cause unspecified impact via static-device rebinding. In drivers/dax/fsdev.c, rebinding from device_dax to fsdev_dax retains pgmap->vmemmap_shift before devm_memremap_pages(), producing a mapping incompatible with required order-0 folios. The condition requires a previously bound static DAX device; Amazon Linux assesses privileged local access, while upstream records do not specify a concrete failure outcome.

The record

CVE
CVE-2026-93076
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=d5406bd458b0ac10b1301a4d5801d85c8f648637 <d298a0513aaf7d48f2a9f4a90041de910750cfcf
  3. Affected versionversion=d5406bd458b0ac10b1301a4d5801d85c8f648637 <e0239229931faf9ca3367e3befcf16f77b2cd45b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=7.1; version=d5406bd458b0ac10b1301a4d5801d85c8f648637 <d298a0513aaf7d48f2a9f4a90041de910750cfcf; version=d5406bd458b0ac10b1301a4d5801d85c8f648637 <e0239229931faf9ca3367e3befcf16f77b2cd45b

Published CVSS scores

4.7Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/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.

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
Privilegesadmin
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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