CVE-2026-93068

Kernel crash via I2C adapter teardown race

Published Sep 17, 2026 · Updated Sep 17, 2026

Linux Kernel 6.18 AMD display I2C teardown has a race that allows local users to crash the kernel via concurrent I2C transfers. DM I2C adapters remain accessible during teardown, allowing amdgpu_dm_i2c_xfer() to dereference a NULL pointer after its backing display-manager state disappears. Triggering requires access to the affected I2C device interface and a transfer concurrent with device removal; the documented consequence is a kernel crash, not data access or privilege escalation.

CVSS severity4.7
Medium
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Linux Kernel 6.18 AMD display I2C teardown has a race that allows local users to crash the kernel via concurrent I2C transfers. DM I2C adapters remain accessible during teardown, allowing amdgpu_dm_i2c_xfer() to dereference a NULL pointer after its backing display-manager state disappears. Triggering requires access to the affected I2C device interface and a transfer concurrent with device removal; the documented consequence is a kernel crash, not data access or privilege escalation.

The record

CVE
CVE-2026-93068
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
Linux Foundation
Product
Linux Kernel
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

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=5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 <6970ec944567f109ac4240f9aea58158ee8a18cd
  2. Affected versionversion=5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 <8ee385305e8902fa6fbfd66b5a112238292567b6
  3. Affected versionversion=5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 <e4ae30a12aa95942814957d8bc1ce7366a7107d7
  4. Affected versionversion=6.18

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Linux Foundation · Linux Kernelversion=5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 <6970ec944567f109ac4240f9aea58158ee8a18cd; version=5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 <8ee385305e8902fa6fbfd66b5a112238292567b6; version=5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 <e4ae30a12aa95942814957d8bc1ce7366a7107d7; version=6.18

Published CVSS scores

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

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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