---
id: "CVE-2026-98746"
kind: "vulnerability"
aliases: ["CVE-2026-98746"]
title: "Linux kernel: ma35d1 serial driver leaks a clock reference on probe"
severity: "low"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "linux-kernel", "ma35d1"]
not_affected_if: []
published_at: "2026-10-18T16:17:28+00:00"
first_seen_at: "2026-10-23T21:57:16+00:00"
updated_at: "2026-10-25T05:16:59+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98746", "first_seen_at": "2026-10-23T21:57:16+00:00"}]
---

# Linux kernel: ma35d1 serial driver leaks a clock reference on probe

The Nuvoton MA35D1 serial driver in the Linux kernel never releases a clock reference it acquires during probe, so the reference leaks on probe error paths and on port removal. The sources describe a resource leak, not code execution or data exposure.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-10-23T21:57:16+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-98746

## From the sources

In the Linux kernel, the following vulnerability has been resolved:

serial: ma35d1: Fix clock reference leak in ma35d1serial_probe()

of_clk_get() returns a clock with a reference that has to be released
with clk_put(). ma35d1serial_probe() never does that, so the reference
is leaked on the probe error paths and also when the port is removed.

Release it on the error paths and in ma35d1serial_remove().

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_