# CVE-2026-74462: i2c: imx: mark I2C adapter when hardware is powered down

> A race condition in the i.MX I2C driver during system suspend/resume can cause a system hang if transfers occur while hardware resources are disabled.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 15 Aug 2026
- **Updated:** 17 Aug 2026
- **Also known as:** BELL-CVE-2026-74462, DEBIAN-CVE-2026-74462, GHSA-69m8-6xjp-pc4w, UBUNTU-CVE-2026-74462

## What is CVE-2026-74462?

CVE-2026-74462 is a denial of service vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

## Which versions are affected by CVE-2026-74462?


## How do I fix CVE-2026-74462?

Apply the vendor's patch.

## Is CVE-2026-74462 being exploited?

There is no known exploitation of CVE-2026-74462 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-74462 and fix it if it is affected.

What it is: CVE-2026-74462 is a denial of service vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-74462 in the wild and no public exploit code.

Affected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-74462/ (Markdown: https://insights.sbomify.com/CVE-2026-74462/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-74462
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-74462
- OSV: https://osv.dev/vulnerability/CVE-2026-74462

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-74462/
Summaries are generated and may contain mistakes; the official description above is the record.