CVE-2026-64278

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

i2c: imx-lpi2c: 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.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References