CVE-2026-64278 Details
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.
A vulnerability in the Linux kernel's I2C subsystem for certain i.MX platforms can lead to a system hang. This issue arises because some I2C client drivers maintain a periodic workqueue that triggers I2C transfers. During the system's suspend and resume phases, there is a critical window where I2C controller resources, such as the clock and pin control, may be disabled or not yet restored. If a workqueue initiates an I2C transfer during this period, the driver may try to access I2C registers without the necessary hardware resources, causing a system hang. The vulnerability affects Linux kernel versions 6.14 and later.
The vulnerability has been addressed by marking the I2C adapter as suspended during the noirq suspend phase and blocking new transfers until the system has resumed. This change ensures that I2C transfers are only initiated when the necessary hardware resources are available.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/218cfe364b55b2768221629bd4a69ad190b7fbbc | kernel.org | Patch |
| https://git.kernel.org/stable/c/5800647d19d3f1f747fda4dc67e55d6afa6ee119 | kernel.org | Patch |
| https://git.kernel.org/stable/c/b2523f26979e0b5bd1422772176b2233fcd1f6d0 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.14, < 6.18.39 >= 6.19, < 7.1.4 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 17, 2026 | CVE Modified | kernel.org |
| Aug 13, 2026 | Initial Analysis | [email protected] |
| Jul 25, 2026 | New CVE Received | kernel.org |