CVE-2026-74462

Received Received - Intake

i2c: imx I2C Adapter Suspend Handling Flaw

Publication date: 2026-08-15

Last updated on: 2026-08-17

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: i2c: imx: mark I2C adapter when hardware is powered down On some i.MX platforms, certain I2C client drivers keep a periodic workqueue which continues to trigger I2C transfers. During system suspend/resume, there exists a time window between: - suspend_noirq and the system entering suspend - the system starting to resume and resume_noirq In this window, the I2C controller resources such as clock and pinctrl may already be disabled or not yet restored. If a workqueue triggers an I2C transfer in this period, the driver attempts to access I2C registers while the hardware resources are unavailable, which may lead to system hang. Mark the I2C adapter as suspended during noirq suspend and block new transfers until resume, ensuring that I2C transfers are only issued when hardware resources are available.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-15

Last Modified

2026-08-17

Generated

2026-09-05

AI Q&A

2026-08-15

EPSS Evaluated

2026-09-03

NVD

CVE-2026-74462

EUVD

EUVD-2026-59655

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability affects the Linux kernel's I2C driver for i.MX platforms. It occurs during system suspend/resume when the I2C controller's hardware resources like clock and pinctrl are disabled or not yet restored. A workqueue may trigger I2C transfers in this window, causing the driver to access unavailable registers and potentially leading to a system hang.

Detection Guidance

This vulnerability is specific to the Linux kernel's i2c-imx driver and may not have direct network detection methods. Check kernel logs for I2C-related errors during suspend/resume cycles using 'dmesg | grep -i i2c' or 'journalctl -k | grep -i i2c'.

Impact Analysis

If exploited, this vulnerability could cause your system to hang during suspend or resume operations. This may result in unexpected system crashes, data loss, or the need for a hard reboot, disrupting normal operations.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards. It is a low-level Linux kernel issue causing system hangs during suspend/resume due to I2C hardware access timing. Compliance impacts would only occur if system failures disrupt data processing or availability, which is not specified in the provided context.

Mitigation Strategies

Update the Linux kernel to a patched version that includes the fix for this vulnerability. Monitor system logs during suspend/resume to ensure no I2C transfer attempts occur in the vulnerable window.

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