CVE-2026-80751Hinoki check available

Kernel fault via uninitialized previous-OPP pointer

Published Sep 3, 2026 · Updated Sep 3, 2026

Uninitialized-pointer use in Linux 6.19 allows local users to fault the kernel or skip the first MediaTek GPU operating point. On the first mtk_mfg_attach_dev() loop iteration, drivers/pmdomain/mediatek/mtk-mfg-pmdomain.c tests prev_o before assigning it and can dereference an indeterminate pointer. The path is reached while attaching a device to the MediaTek MFG power domain; the documented outcomes are a kernel fault or incorrect omission of the first OPP.

CVSS severity7.8
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Uninitialized-pointer use in Linux 6.19 allows local users to fault the kernel or skip the first MediaTek GPU operating point. On the first mtk_mfg_attach_dev() loop iteration, drivers/pmdomain/mediatek/mtk-mfg-pmdomain.c tests prev_o before assigning it and can dereference an indeterminate pointer. The path is reached while attaching a device to the MediaTek MFG power domain; the documented outcomes are a kernel fault or incorrect omission of the first OPP.

The record

CVE
CVE-2026-80751
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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=6.19
  2. Affected versionversion=f08e7a4e8d6ac4de677727af352ea33c6ce9f444 <090a95dbe13df9965279b588d97eda134831769c
  3. Affected versionversion=f08e7a4e8d6ac4de677727af352ea33c6ce9f444 <de4eec0dfde8c0e27f8915bbb244d17ff68f2fb4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.19; version=f08e7a4e8d6ac4de677727af352ea33c6ce9f444 <090a95dbe13df9965279b588d97eda134831769c; version=f08e7a4e8d6ac4de677727af352ea33c6ce9f444 <de4eec0dfde8c0e27f8915bbb244d17ff68f2fb4

Published CVSS scores

7.8UbuntuCVSS: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.

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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

T1499.004Endpoint Denial of Service: Application 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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