CVE-2026-72062

Service interruption via GPIO trigger-state race

Published Aug 15, 2026 · Updated Aug 15, 2026

Race condition in the Linux MT7621 GPIO driver allows local users to interrupt service through concurrent IRQ-type updates. The mediatek_gpio_irq_type() callback updates bank-shared rising and falling bitmaps with unlocked read-modify-write operations, so simultaneous updates for different pins overwrite one another. Exploitation requires local low-privileged access on a system using the MT7621 GPIO controller; the bounded consequence is incorrect interrupt handling and system instability.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux MT7621 GPIO driver allows local users to interrupt service through concurrent IRQ-type updates. The mediatek_gpio_irq_type() callback updates bank-shared rising and falling bitmaps with unlocked read-modify-write operations, so simultaneous updates for different pins overwrite one another. Exploitation requires local low-privileged access on a system using the MT7621 GPIO controller; the bounded consequence is incorrect interrupt handling and system instability.

The record

CVE
CVE-2026-72062
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-366, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=4.19
  2. Affected versionversion=4ba9c3afda41213ec98c30053e32963892e6dc7c <1781172526d1092323af443fa03f00e6de560401
  3. Affected versionversion=4ba9c3afda41213ec98c30053e32963892e6dc7c <207d3ebf36f654a43a934addeb4d6775cb2dd667
  4. Affected versionversion=4ba9c3afda41213ec98c30053e32963892e6dc7c <877a243006788aaa586b2d087f27c9f3628071b0
  5. Affected versionversion=4ba9c3afda41213ec98c30053e32963892e6dc7c <a60a40c9ba30edd06d3fb4215fdf430ed968728e
  6. Affected versionversion=4ba9c3afda41213ec98c30053e32963892e6dc7c <d3b9026ef78da3018a7d2c5a9c9d611de6d45c47

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.19; version=4ba9c3afda41213ec98c30053e32963892e6dc7c <1781172526d1092323af443fa03f00e6de560401; version=4ba9c3afda41213ec98c30053e32963892e6dc7c <207d3ebf36f654a43a934addeb4d6775cb2dd667; version=4ba9c3afda41213ec98c30053e32963892e6dc7c <877a243006788aaa586b2d087f27c9f3628071b0; version=4ba9c3afda41213ec98c30053e32963892e6dc7c <a60a40c9ba30edd06d3fb4215fdf430ed968728e; version=4ba9c3afda41213ec98c30053e32963892e6dc7c <d3b9026ef78da3018a7d2c5a9c9d611de6d45c47

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.

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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-366Race Condition within a Thread
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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