CVE-2026-93074Hinoki check available

Kernel memory corruption via gapped DAX arithmetic

Published Sep 17, 2026 · Updated Sep 18, 2026

Incorrect address calculation in Linux 7.1 through 7.2.5 allows local users to read or write kernel memory through FS-DAX file I/O. The __fsdev_dax_direct_access function adds a linear byte offset to the first range's virtual address instead of translating each physical address independently. Exploitation requires an admin-bound, mounted multi-range DAX device with physical gaps; access to a file on that mount permits memory disclosure, corruption, or a kernel crash.

CVSS severity7.8
High
EPSS probability0.17%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Incorrect address calculation in Linux 7.1 through 7.2.5 allows local users to read or write kernel memory through FS-DAX file I/O. The __fsdev_dax_direct_access function adds a linear byte offset to the first range's virtual address instead of translating each physical address independently. Exploitation requires an admin-bound, mounted multi-range DAX device with physical gaps; access to a file on that mount permits memory disclosure, corruption, or a kernel crash.

The record

CVE
CVE-2026-93074
Published
Sep 17, 2026
Updated
Sep 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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=759455848df0b9ac3acabdbedcdc4a55af67935f <7b642bd3d39105eef4d5908970726c5fda291b53
  3. Affected versionversion=759455848df0b9ac3acabdbedcdc4a55af67935f <ff7c73fca793bd5c29a15ba735b0886f62f3a840

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=7.1; version=759455848df0b9ac3acabdbedcdc4a55af67935f <7b642bd3d39105eef4d5908970726c5fda291b53; version=759455848df0b9ac3acabdbedcdc4a55af67935f <ff7c73fca793bd5c29a15ba735b0886f62f3a840

Published CVSS scores

7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

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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