CVE-2026-64278: i2c: imx-lpi2c: mark I2C adapter when hardware is powered down
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: - suspendnoirq and the system entering suspend - the system starting to resume and resumenoirq
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-64278?
CVE-2026-64278 has a medium severity rating of 5.5 according to the CVSS 3.1 scoring.
How do I fix CVE-2026-64278?
To fix CVE-2026-64278, you should update to the patched version of the Linux kernel that addresses this vulnerability.
What are the risks associated with CVE-2026-64278?
The risk associated with CVE-2026-64278 includes potential unauthorized I2C transfers during system suspend/resume, which could lead to data corruption or device failures.
Which systems are affected by CVE-2026-64278?
CVE-2026-64278 affects certain i.MX platforms that utilize specific I2C client drivers in the Linux kernel.
When was CVE-2026-64278 published?
CVE-2026-64278 was published on July 25, 2026.