CVE-2026-31562

System crash via unset DSI driver data

Published Apr 24, 2026 · Updated Apr 24, 2026

NULL pointer dereference in MediaTek DSI support in Linux Kernel 6.9 allows local users to crash the kernel during device probing. In mtk_dsi_probe, mipi_dsi_host_register invokes mtk_dsi_bind before platform_set_drvdata stores the mtk_dsi pointer, so dev_get_drvdata returns uninitialized data that is dereferenced. Triggering requires local privileges sufficient to initialize the affected MediaTek DSI driver; the crash occurs while mode_config.idr_mutex is held and blocks subsequent DRM operations.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in MediaTek DSI support in Linux Kernel 6.9 allows local users to crash the kernel during device probing. In mtk_dsi_probe, mipi_dsi_host_register invokes mtk_dsi_bind before platform_set_drvdata stores the mtk_dsi pointer, so dev_get_drvdata returns uninitialized data that is dereferenced. Triggering requires local privileges sufficient to initialize the affected MediaTek DSI driver; the crash occurs while mode_config.idr_mutex is held and blocks subsequent DRM operations.

The record

CVE
CVE-2026-31562
Published
Apr 24, 2026
Updated
Apr 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 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=6.9
  2. Affected versionversion=e4732b590a77318dff134612b013d66d2448ab20 <4cfdfeb6ac06079f92fccd977fa742d6c5b8dd3a
  3. Affected versionversion=e4732b590a77318dff134612b013d66d2448ab20 <9a709b7e36324dfc1e6728eb81405470b7ae84e5
  4. Affected versionversion=e4732b590a77318dff134612b013d66d2448ab20 <df03f5ac1eae7c5a2c01846e3e64dfc2870eec6b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.9; version=e4732b590a77318dff134612b013d66d2448ab20 <4cfdfeb6ac06079f92fccd977fa742d6c5b8dd3a; version=e4732b590a77318dff134612b013d66d2448ab20 <9a709b7e36324dfc1e6728eb81405470b7ae84e5; version=e4732b590a77318dff134612b013d66d2448ab20 <df03f5ac1eae7c5a2c01846e3e64dfc2870eec6b

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/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.

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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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